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Great Reads

GFX In Depth: Part 1 - Drawing Fundamentals

by honey the codewitch

Explore techniques for drawing using GFX

GFX Part 4: The ILI9341 Display Driver and JPEG Support

by honey the codewitch

Use an ILI9341 display efficiently from an ESP32 without the Arduino framework. Load JPEGs.

Free-Hand Drawing Application

by Garvit Arya

It is a JavaScript based application for drawing basic free-hand shapes, logos and drawings.

How to Create a Simple Drawing App using HTML 5 Canvas [fabricJS]?

by Swagat Parida

Steps to create a simple drawing app using HTML5 Canvas

Latest Articles

Interfacing HY28A LCD Module with ILI9320 Controller and XPT2046 Resistive Touch Panel to PIC Microcontroller

by Minh Danh Nguyen (ToughDev)

This is a cheap 320×240 2.8″ TFT LCD module that uses the ILI9320 controller for the display and the XPT2046.

GFX In Depth: Part 2 - E-Paper Displays

by honey the codewitch

Use GFX effectively with e-paper/e-ink displays

GFX In Depth: Part 1 - Drawing Fundamentals

by honey the codewitch

Explore techniques for drawing using GFX

GFX Sidebar: Inside the ILI9341 Display Driver on the ESP-IDF

by honey the codewitch

Explore the inner workings of a highly capable IoT display driver for the ESP32

All Articles

Drawing

what is best practice for SQL like diagram

17 May 2015 by A.Ebrahimi

In my project I need to reproduce a property and connection diagram and it is suitable to be something exactly like diagram in MSSQL.I can produce table like object (as in mssql) using panel and grieds dynamically, but main problem for me is how to connect one selected cell to another cell in...

WPF: How to make a Drawing Application?

20 Jan 2013 by Abed AlSayed

Hi, I want to make a Paint like App(pencil, text, eraser, lines & shapes drawings) with ability to resize shapes & edit Text at any time (Like Microsoft PowerPoint) in WPF.My Question is : What Tools should I use? (for some reasons I don't want to use Inkcanvas)And how to make my own...

How to create tables Dynamically(just like MS Word 2007) using Drawing visual class

18 Mar 2013 by Abhinav_Sharma

Hi friends,Is there a way to draw tables dynamically(just like MS word 2007)in WPF using drawing visual class.For Eg. IN MS word User Select the no. of Rows and columns using Table Tab and as a result tables get created. Can the Same be implemented in wpfOr How to create tables...

Dynamically add Columns to DataGrid in wpf

27 Mar 2013 by Abhinav_Sharma

I am currently working on a custom canvas and in that i have to add a table,So i thought dataGrid would be fine. SO i Want to create a "Table" from "Datagrid" by which user can add a table to the canvas at runtime.Till now, I have tried to Populate DataGrid With a list and succeded.How...

Drawing a tekst exactly fitting in a rectangle

15 Sep 2012 by Adam David Hill

Just a quick off-the-cuff idea, but have you tried just wrapping a TextBlock inside a ViewBox? I don't have access to VS at the moment to try, but I imagine that would scale it automatically for you with essentially no special code.Apologies if I've missed something.

how to draw with Path Markup Syntax /Geometry a figure in c#-WPF

30 Oct 2014 by AeroClassics

Make you map using Adobe Illustrator or Photoshop. Then import the file into Blend. When it is imported you will see all the Path Objects with data. Copy these into you XAML file and use them.I do this when adding glyphs to my buttons.Doug

computational-geometry

how to close image stream

19 Oct 2014 by Afzaal Ahmad Zeeshan

A simple answer is that every stream and resource using code exposes this method .Close() by using which, you can easily close the resource so that a next process can easily use it. Without having to throw an exception to you.I have already posted an answer a few days ago, which had...

How do I draw 2 seperate line on a one chart area using simpleperfchart in C# ?

3 Dec 2016 by Alper_Baysal

I am using the SimplePerfChart in my program. I am reading data from PLC and draw a line in a chart according to my data. But now i have to draw to seperate line on a single chart area (for example minimum and maximum values ) but i can't do it.Sorry for my english. It isn't my native...

How do I draw 2 seperate line on a one chart area using simpleperfchart in C# ?

3 Dec 2016 by Alper_Baysal

You are right i am talking about that project. I did that at the same time i posted this question.

How do I draw an arc that goes from 0 degrees to 180, and his perimiter is 20mm?

11 Dec 2017 by alywaly

I would use the graphics DrawArc method and call this from overridden OnPaint(PaintEventArgs e) private void MyDrawArc(PaintEventArgs e) { // Create pen.d Pen pen = new Pen(Color.Black, 22); // coordinates int x = 100; int y =...

Show your System.Drawing.Color Palette

24 Nov 2012 by anssary2010

How to show your System.Drawing.Color palette

Render texture to image (.net cf)

17 Aug 2011 by Anthony Mushrow

This[^] NeHe article (among other things) shows you how to render to a texture. The basic procedure is to set the viewport to the size of the texture then render whatever you need, and finally to copy your screen buffer to the texture using glCopyTexImage2D.If you need to update the texture...

draw rectangle on web page using only asp.net c# visual studio 2008. without using bitmap images

10 Mar 2013 by Asim Mahmood

http://stackoverflow.com/questions/8475232/draw-and-fill-a-simple-rectangle-in-c-sharp[^][]http://stackoverflow.com/questions/15295193/how-can-i-draw-a-rectangle-on-webpage-using-asp-net-with-c-sharp[^][]http://msdn.microsoft.com/en-us/library/system.drawing.rectangle.aspx[^][]

How to draw an XML file visually using visual studio (C#)

3 Oct 2012 by austinbox

Hello,Your question seems a bit vague but interesting, I would recommend using a treeview becuase it supports nodes and images like you said. //First lets read the xml.. List parents = new List(); List nodes = new...

Why does function createpolygonrgn() fail?

19 Sep 2020 by Avtem

So i'm trying to create a digit clock using only WinAPI with C++ (see the screenshot)[^] Function drawDash() is called 7 times to draw one digit. i use Timer which redraws the digits every 100 milliseconds. Everything looks fine, but for...

C# Garbage Collection of “Drawing” Objects inside a FrameworkElement within an ObservableCollection

23 Sep 2012 by BeStelios

Hi,I have an ItemsPanel extended with my IscrollInfoLogic, ContainerGenerator etc.. (Virtualizing)The ItemsPanel contains FrameworkElements which have a Property type of Drawing.If the Item is visible i do:On the Onrender if the DrawingProperty is not null i go with...

Windows store app using SVG in XAML, possibel?

12 Sep 2013 by Bilaal John S

Please checkhttp://social.msdn.microsoft.com/Forums/windowsapps/en-US/141afaf4-9638-4387-9f4e-8bfef1da62f7/how-to-use-svg-images-in-windows-8-store-apps-cxamlhttp://stackoverflow.com/questions/13788934/using-a-svg-file-for-a-background-for-a-windows-store-app-metrothanks,Bilaal

How to create tables Dynamically(just like MS Word 2007) using Drawing visual class

12 Sep 2013 by Bilaal John S

This link will help youhttp://stackoverflow.com/questions/4978723/grid-table-in-wpfThanks,Bilaal

Draw multiple rectangles on WPF canvas

4 Jun 2012 by BillW33

Read this[^] for the basics on drawing with WPF. Also read this[^] article.

How to crop (make a rectangular hole in) a panel in C#

3 Sep 2017 by BillWoodruff

using System.Drawing; using System.Windows.Forms; namespace PathStuff { public static class PathExtensions { public static void MakeHole(this Control cntrl, Rectangle xrect) { var region = new Region(cntrl.ClientRectangle); region.Exclude(xrect);...

MFC ActiveX not properly redrawn

18 Feb 2014 by bling

This *usually* means the containing window is processing the WM_ERASEBKGND windows message. If the Active-X control draws it's own background - having the containing window do this is a waste and also causes flicker. Override this message to return a non-zero value (eg. 1) to suppress this...

How do I create a polygon route on android Google maps?

15 Oct 2016 by BurkusCat

Hi there,I am using the Google Location Services API on Android to periodically save a latitude/longitude they were at. I am trying to create a polygon around these points to create a route of where they have been. I want the route to take into the location accuracy for each of the points, so...

How can I Draw Puzzle Piece with GDI+?

11 Dec 2015 by CHill60

Have a look at this CP article Professional C# - Graphics with GDI+[^]There is also a reference zone[^] here on CPOr there always the M$ documentation[^]

custom-controls

How to add mark on scrollbar in position of scrollbar in VB .NET

7 Feb 2022 by CHill60

There are some articles here on CP that can guide you into building your own Custom Control WinForms Custom Container Control[^] Writing Your Custom Control: Step by Step[^] There is also this article...

Drawing Polylines by Tessellation

21 Jul 2011 by Chris H.F. Tsang

Drawing Polylines by tessellation with joints, caps, feathering and per- vertex color

HELP Emergency printing many barcode in a page

12 Apr 2012 by Chris Ross 2

It's hard to give advice without knowing your actual level of experience. You say you're a newbie, however, so I'll assume that there's more you don't know (but need to) than what you do know.I would start by researching the simple mechanics of printing from a .Net app. Forget about bar...

ADD Circle,Line,Rectangle and Ellipse options in my minipaint app with C#

17 Jun 2013 by Chris Ross 2

To draw items like rectangles, circles, etc. you need to first think about how you want your user to interact with the program when the are adding a rectangle, etc. For example - mouse down, drag, up might record one corner (mouse down position) and then the opposite corner (mouse up). A circle...

WPF: How to make a Drawing Application?

20 Jan 2013 by Christian Graus

This is actually harder in WPF, because the logical way to do it, is not to draw on a bitmap, but to keep track of actions and draw them on TOP of your image. At least, that's how I did it when I did it and it was a royal pain

How do I draw a single scrolling multipage graph in VB/WPF

7 Oct 2012 by Clifford Nelson

This is not straignt forward. I am not sure what you really want, but if you want to page from one to the other I would suggest using a scroll bar with a pane and replacing the image in the window with the correct page. If you are willing to just scroll, I would put the pages into a grid, and...

Can a WPF Custom control use the Background Brush of the control's container.

17 Jan 2016 by cmbay

I am creating a WPF Custom Control Template and I would like one of the GeometryDrawing Brushs to use the Background Brush of the control's container. For example if I put this control on a Window I would like this particular Brush to use the Window's Background Brush. Like wise if the control...

computational-geometry

custom-controls

How to draw certain parts of an image transparent

6 Jan 2012 by CoolC22

I am currently writing on a program in Vb.net where I need certain regions or certain pixels of an image to be set transparent. I am not looking for setting a similar color in an image transparent, but specific pixels or regions in the image to be set transparent.Here's the code I tryed, but...

DrawItem for a control

18 Jul 2013 by CPallini

Usually you don't call explicitely it. See "WM_DRAWITEM message" at MSDN[^].

In Visual C++ how can I draw a set of 3d points?

19 Dec 2013 by CPallini

You may also draw it yourself using the relatively simple isometric projection[^].

C# Draw a line between 2 objects

27 Mar 2014 by CPallini

Yes, you have to implement a method like that, namely GetCity(xmouse, ymouse). It is a pretty straightforward task: you have to find the city most close to {xmouse, ymouse} and pick it (if it is enough close to). 'Close to' is measured by the distance (or the simpler squared-distance:...

Moving rectangles at run time

14 Dec 2016 by CPallini

"It didn't worked" is not pretty informative. Please elaborate.Anyway, I suppose you are missing a conversion from Screen to Client coordinates (or the opposite). Have a loook at Mouse Events in Windows Forms[^] and at Control.PointToClient Method (Point) (System.Windows.Forms)[^] (for sample...

Drawstring vs. Drawtext performance

4 May 2018 by creizlein

I have a custom control that used a lot of Label controls inside, and i started experiencing performance issues when drawing/redrawing the screen So i decided to remove them as they look overwhelming and just draw the texts I needed I started using Graphics.DrawString method, which was SUPER...

Four Color Map Problem in C#

22 Apr 2014 by czmn

Hello, i'm new on this site and i try to learn C#.I have a question about the four color problem. I need to do an aplication that simulate the four color maps in win forms. I know how to do in console application using backtracking, but i tried to do in win form using the same algorithm but i...

Transform WPF GeometryDrawing where the GeometryDrawing path points are effectively changed

31 Aug 2015 by DanBecause

I can't say I entirely understand what you mean by "really change the pathpoints", but the Transform property on the Geometry will scale the Geometry before it is rendered and the Geometry will be rendered as though it were the scaled size (not a zoomed version of the original size). So, for...

How many semi transparent layers of 0.5 opacity needed to reach 1?

25 Jul 2015 by Dave Kreskowiak

Technically, infinite.Or, you one with a opacity set to an appropriate value.

C# draw rectangle with negative heigth

7 Dec 2016 by Dave Kreskowiak

It would seem kind of obvious to just check to make sure the height is greater than 0 before drawing the rectangle.

Drawing on Picturebox

13 Sep 2011 by david94x

Hello everyone.I'm programming a tool that given a section (eg 16 x 16), drawings of characters from an image, but I can not, because everything that I found on the Internet, draw the form. Can anyone help me?This is the code that I did, but that does not work.Thanks in advance:) ...

MFC ActiveX not properly redrawn

17 Feb 2014 by DFaeuster

Hey Folks,I'm facing an annoying problem that drives me nuts.On my CView-derived view I placed an ActiveX Control that consists of some buttons - nothing fancy or special. At the beginning it is shown correctly but after the OnUpdate()-method of the view the Control is not shown anymore...

Change The Image Color in Android

22 Mar 2013 by Dheeraj Singh Bhadoria

This Artical shows that how we can change the color of any image throw Bitmap

In Visual C++ how can I draw a set of 3d points?

19 Dec 2013 by Domus1919

Hi, I'm using OpenCV on Visual C++ 2010 for elaborate a set of images. But now I need to draw a set of 3d points (x,y,z) in a 3d space, because I need to have a feedback of how these points are allocated in 3d space. I don't need to do anything exceptional, so what would you advise me...

vb.net drawing on zoomed image

6 Jun 2014 by DrGrim

i found out how to do this right this is the url from which i got the codehttp://www.daniweb.com/software-development/vbnet/threads/151127/correctly-displaying-image-in-picturebox[^]NOTE !! This will scale the image to "fit" the picturebox so if you decide to save the image it will...

image-processing

Vb.net bitmap blurred when saved

25 Jun 2014 by DrGrim

hello once again !could someone tell me how could i save an image that i drew (painted) on it with the same image quality as the original image ?i'm using this code to save the image :Using Bmp As New Bitmap(PictureBox4.Image, defaultWidth, defaultHeight) Using G As...

Vb.net bitmap blurred when saved

25 Jun 2014 by DrGrim

Thank you OriginalGriff , i have tried your way and with no result from what i have read on google this blur appears due to the bitmap resize .

vb.net drawing on zoomed image

5 Jun 2014 by DrGrim

hello ! so i got this project , to make a paint like application . The Application must load and image and one must be able to draw on that image .This loads the image and preps it for editing : Quote:PictureBox4.Image = Image.FromFile(str) PictureBox4.SizeMode =...

image-processing

How to make a drawing field? (Like sketching environment of CAD softwares)

10 May 2016 by farhad baghyari

Hi i am a mechanical engineering student.(so i don't know too much about programming)I wanna make a program that draws curves with rational Bezier (I should write the code myself and not using formGraphics.DrawBezier). I've recently started learning c# and i am so new to it. I've searched alot...

how can I draw a rectangle and circle/ellipse in WPF like we do in paint by dragging mouse

13 Jun 2012 by Farhan Ghumra

I am developing a whiteboard application in WPF.How can I draw a rectangle and circle/ellipse by dragging the mouse like we do in Paint by dragging the mouse pointer ?I am using WPF canvas for drawing.P.S. : I have refered this article, but it's too complex, i am not able to understand.

Drawing in metro style application

25 Jun 2012 by Farhan Ghumra

Hello,I m developing paint like application for windows 8. I have tried but I can't even developed even a line drawing tool. My application will have free hand tool, line, rectangle, ellipse, circle drawing tool, erasor. I am using canvas tool for drawing.So please guide me with some...

Erasing the content from canvas

27 Jun 2012 by Farhan Ghumra

Hi, I am developing a paint like application in metro style. I want to apply a eraser functionality. So how can I make such a tool for erasing the content from canvas like we do in MS paint ?I don't want to clear whole canvas, wherever I click or drag the pointer, the path traveled by the...

Need sample application explaining use of WriteableBitmapEx for winrt or wpf

28 Jun 2012 by Farhan Ghumra

I need sample application explaining use of WriteableBitmapEx for winrt or wpfI have checked the codeplex but I am not getting any output in my metro application.

Metro Paint

6 Nov 2013 by Farhan Ghumra

A Metro style app for basic drawing feature.

hand writing recognition in c# metro style app

8 Jul 2012 by Farhan Ghumra

Hi, I am developing a note taking application in C#/XAML. I want a user to write anything on canvas with InkManager of "Windows.UI.Input.Inking". Then I want to display it as text onto canvas and then I want to save those recognized text in either text or image format.I have checked MSDN[^]...

hand writing recognition in c# metro style app

10 Jul 2012 by Farhan Ghumra

Here is my solution IReadOnlyList text; string finalt = ""; private async void Recognize_Click(object sender, RoutedEventArgs e) { IReadOnlyList x = await _inkManager.RecognizeAsync(InkRecognitionTarget.All); ...

Drawing in metro style application

22 Jul 2012 by Farhan Ghumra

i have successfully developed my app, you can check Metro Paint[^]

c# insert textbox on multiple pages in ms word document

4 Jan 2015 by Farhan Qureshi

Hi,I am using blow code to insert textbox in ms-word document. It inserts all the textboxes in one page i want to start a new page when end of page occurs. using Microsoft.Office.Interop.Word;using System.Data;using Microsoft.Office.Core;float top = 20;float height =...

Why doesn't this code work?

5 Feb 2013 by fjdiewornncalwe

The syntax error you are receiving is because of the semi-colon at the end of your function declaration which causes the spriteBatch variable on the next line to be out of scope.public void Draw(SpriteBatch spriteBatch);

Need some suggestions on how to make a dynamic starmap in C#/WPF

29 Mar 2012 by Frank R. Haugen

I have a half-finished tool for calculating distances between real-life stars, and positions in space, and much more, but I'd like to make a 2D map of the 100'000 closest stars, but I need some advise.Firstly; making the position X=0 and Y=0 location dead center of the program window, (with...

Drawing scalable shapes in Android

25 Aug 2014 by Fredrik Bornander

Use a scale Transform;Matrix matrix = new Matrix();matrixsetScale(2.0f, 2.0f);// path is your pathpath.transform(matrix); Or, if you want to scale around the center of the path;Matrix matrix = new Matrix();RectF boundingBox = new RectF();path.computeBounds(boundingBox,...

Simple Method to Invert a Color

21 Feb 2015 by FrostedSyntax

A method to get the inverted equivalent of a specified color.

Need sample application explaining use of WriteableBitmapEx for winrt or wpf

3 Jul 2012 by Fun@learn

Check the sample application present with the library. They are very helpful to understand how to use, tweak the library.This library is excellent. Bitmap operations are not supported natively, but these guys did all the hard work to make it simpler for others.Major reason for this...

Free-Hand Drawing Application

15 Jun 2014 by Garvit Arya

It is a JavaScript based application for drawing basic free-hand shapes, logos and drawings.

Draw Behind Desktop Icons in Windows 8+

22 Dec 2014 by Gerald Degeneve

Draw or render a Windows Form directly over the Wallpaper, behind the Desktop Icons in Windows 8+10

Draw a blinking circle on canvas - android studio

30 Aug 2018 by Gerry Schmitz

Blinking or "strobing" can cause epileptic fits in certain individuals and is therefore not recommended. It's grouped in with "web sites that suck". ("Rotating" is better IMO).

Fill a curve with a transparent gradient brush and save it C#

8 Sep 2020 by Gerry Schmitz

.net - C# Create Gradient Image - Stack Overflow[^] This is a mod of the above (changed one of gradient colors and the file type). The point is you can save a transparent gradient; you just have to think more about how you apply your other...

3D Drawing using c#

14 Apr 2015 by Gokulprasad05

Triangle FarPlaneDistance="100" LookDirection="-12,-11,-10" UpDirection="0,1,0" NearPlaneDistance="1" Position="11,10,9" FieldOfView="75" /> ...

I want to draw a diagram about the TreeView with WPF, but I can't get to the TreeView node coordinates

23 Nov 2014 by golden_cjs

who can give me some advice about how to get the point of TreeView Node.I want to draw a picture with two TreeView Control and I Must to Draw a line from the First TreeView Node to another TreeView Node.who can give me some advice.please

How to calculate dx and dy in sobel edge detection in 5X5 matrix?

5 Nov 2012 by govindaAlwani

I am bit confused how to calculate dx and dy in sobel edge detection method ....I googled it and i found that.......public class SobelEdgeDetector : ImageFilter { private Color grayscale(Color cr) { return Color.FromArgb(cr.A,...

How to crop (make a rectangular hole in) a panel in C#

31 Aug 2017 by Graeme_Grant

[moved from comments - thanks for the suggestion RickZeeland] Is the hole suppose to show objects behind it? Like a transparent hole? Something like this: Making Transparent Controls - No Flickering[^][^]???

Drawing line above all the controls in the form

15 Dec 2011 by Harish Kumar Bansal

Hi,I am developing a program. In this, i have a form with some controls like Button and Labels on the form. Now i draw a line on the form using DrawLine() method but this line appears in the backgrounds of all the controls like labels and Buttons. I want to draw line, above all the...

How to draw pictures en c#...

6 Jan 2012 by hassan faghihi

use Graphic class in draw/ing namespacethen pass your form/panel.... instance to itGraphic g= Form1.CreateGraphic(); //(or some thing like this..)then u can call g and put dot ('.') after it and all function of drawing will appear .you can crate pen from brushes and bruses from color...

GFX Part 3: Drawing Primitives

25 Apr 2021 by honey the codewitch

Explore the basic drawing functionality provided by the GFX IoT library

GFX Part 4: The ILI9341 Display Driver and JPEG Support

4 May 2021 by honey the codewitch

Use an ILI9341 display efficiently from an ESP32 without the Arduino framework. Load JPEGs.

GFX Sidebar: Inside the ILI9341 Display Driver on the ESP-IDF

6 May 2021 by honey the codewitch

Explore the inner workings of a highly capable IoT display driver for the ESP32

GFX In Depth: Part 1 - Drawing Fundamentals

3 Jun 2021 by honey the codewitch

Explore techniques for drawing using GFX

GFX In Depth: Part 2 - E-Paper Displays

18 Jun 2021 by honey the codewitch

Use GFX effectively with e-paper/e-ink displays

Dynamically draw an SVG shape in Javascript

3 Sep 2014 by HuggableAlien

Hello,I am trying to make a program similar to Moraware's CounterGo, and one of the best features in it is the way you can draw a polygon by simply dragging the mouse around a canvas.Is there a way to recreate this in Javascript? I have tried SVG-Edit, but there are too many tools, and I...

Visual representation of queried Data from XML file

11 Dec 2012 by imran.mm7

Dear all, I have a very large xml file. In this file i have various data. I am using linQ to collect the particular information. I would like to present this information in a graph form (not the tree view control). This graph would simple contains data (parents) as circles or rectables and...

Visual representation of queried Data from XML file

12 Dec 2012 by imran.mm7

Thank you for the link, but as i asked in my question. I need to draw it in a tree shape ...not chart..i already used Microsoft chart control to render data in charts..but now my interest is to render data in graph form..hopefully that clarifies my question..greetings

How to move Drawingvisual by mouse?

15 Jul 2015 by Inimicos

Here is my code.using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using...

Fourier Transform in Digital Signal Processing

6 Mar 2016 by Jakub Szymanowski

The article presents idea and implementation of Fourier Transform (DFT and FFT algorithms) in Digital Signal Processing.

How can i cut of image in C#

24 Jun 2011 by jiji2663

i have a paint control for drawing.i want cut of a picture were drawed in paint controlx1=>first of draw in paint controlx2=>end of draw in paint control Rectangle rec = new Rectangle(paint_Control1.X1, 0,paint_Control1.X2 - paint_Control1.X1, paint_Control1.Height); ...

Render texture to image (.net cf)

17 Aug 2011 by joe628aa

Hi There!I'm trying to draw non rectangular 2D shapes (polygons, ellipses) with open gl es in .net cf, which are textured with gradients. I thought that i could create the gradient by drawing a rectangle with its vertices colored and than use that rectangle as a texture on the actual shapes....

Render texture to image (.net cf)

18 Aug 2011 by joe628aa

Thank you for the answer, I'll try it out.

Draw multiple rectangles on WPF canvas

4 Jun 2012 by JoeBlowski

I want to represent the layout of components on a circuit board by drawing multiple rectangles on a WPF canvas (if canvas is the best container). Sizes and geometries of components are maintained in a class already developed. Can anyone suggest an approach to drawing shapes in the code behind,...

how to add the same picture for every rectangle (area) generated randomly

28 Mar 2013 by johannesnestler

assuming your code is working - just change the scG.FillRectangles to (a looped) call to scg.DrawImage ...

Intersect multiple circels

20 Apr 2021 by JR212

Hi, How Can I see if 2 or more circels intersect or touching each other? What I have tried: When using rectangle and the upper left corner touch the lower right corner the circles aren't really touching. but intersect return true

How can I clear drawings done by cclientdc?

1 Aug 2018 by KarstenK

If the control is completly owner drawn that you should use FillRect with your bckground color at first draw call. And I would suggest that you store the Windows-handle of the control and other constant objects (like the pen) as member variables to improve performance.

How can I draw rect on oninitdialog in MFC VC++?

3 Aug 2018 by KarstenK

Another solution is to use PostMessage for a WM_PAINT message which triggers the painting of your control. Best is to use InvalidateRect for the control before. Tip: Create the pens only once, as class members or as static objects to improve performance.

I want a program to convert xy cordinate text file into dxf.

21 Oct 2019 by KarstenK

Than you need to acquire the knowledge. I used my search engine to find the dxf format in the wikipedia. Read it to understand the format and follow some links. When you understand it, you may write some converter code. It is simple text readable format, so simple things shouldnt be too hard. ...

Why does function createpolygonrgn() fail?

19 Sep 2020 by KarstenK

Your problem is here:FillRgn(hdc, hrgnClip, CreateSolidBrush(color)); in creating a brush and NOT deleting it. Asign it to a var use it and than delete it later, or if the color is constant you need to create it only once. Your error case is...

how to add the same picture for every rectangle (area) generated randomly

28 Mar 2013 by kastriotlimani

Hi, i am a beginner at coding, and i am making a little game where a character is capturing some dots generated randomly.Now i need each dot to be an image (same image for all), but i cant find out how to do it.This is a piece of what I did:Rectangle[] rects;rects = new...

How to draw a rosette in c# graphics?

8 Apr 2013 by kastriotlimani

I am looking forward to make a rosette using c# graphics...Here is what I'm trying to achieve:https://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Academ_rosette.svg/630px-Academ_rosette.svg.png[^], of course not the lines outside the circle.If someone can give me some lines of code...

draw rectangle on web page using only asp.net c# visual studio 2008. without using bitmap images

10 Mar 2013 by kaushal joshi

Can any one tell me full code of draw a rectangle in webpage using asp.net c#. But i don't want to use bitmap image here. I need a simple webpage using c# asp.net in which only one rectangle should be there but without using bitmap image. Please do not use this:Bitmap bmp = new Bitmap(width,...

Drawing Sprite Error

30 Jun 2014 by Keith O. Williams

I am making a Bejeweled game in Visual Basic Professional 2010 (which is apart of the web browser known as Scoontz) and I stumbled across an error when trying to draw a sprite: DrawSprite is not a member of Scoontz.SpriteHere is the code (with the line in question in bold): ' Note...

Drawing a tekst exactly fitting in a rectangle

15 Sep 2012 by Kenneth Haugland

Can you use this:TextBox myText = new TextBox();Rect textRext = myText.GetRectFromCharacterIndex(myText.Text.Length);http://blogs.microsoft.co.il/blogs/tamir/archive/2007/03/12/Text-length-measurement_3F00_-It_2700_s-really-easy-with-WPF.aspx[^]

how to draw with Path Markup Syntax /Geometry a figure in c#-WPF

28 Oct 2014 by Kinna-10626331

Hi ,as a test I am adding as background of a Grid column a DrawingBrush element which using PElipseGeometry draws something similar a strech ellipse.Here is the code: ...

computational-geometry

How to offset a polygon when all points are given at the run time using C#

27 Feb 2014 by KUMAR619

I created a polygon by clicking points in the picture box.So the points are user defined at the run time.I want to make an offset polygon over it.How to make polygon offset at all sides.Can anyone give me the codePlease help me to create an offset polygon