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Hi..
I have a specification sheet which has a horizontal scrool bar..
I would like to know what is the windows notify message sent when i move the horizontal scroll bar. I tried WM_HSCROLL but it was not working for me..
Can any one help me in this reg.
Thanks
Sudhakar
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Make sure WM_HSCROLL and WM_VSCROLL are defined correctly, as in this example:
using System;
using System.Drawing;
using System.Windows.Forms;
class Test : Form
{
static void Main()
{
Application.Run(new Test());
}
Label lbl;
Test()
{
Text = "Sample";
AutoScroll = true;
lbl = new Label();
Controls.Add(lbl);
lbl.Location = new Point(0, 0);
lbl.Size = Size + Size;
lbl.TextAlign = ContentAlignment.MiddleCenter;
}
protected override void OnResize(EventArgs e)
{
lbl.Size = Size + Size;
base.OnResize(e);
}
const int WM_HSCROLL = 0x0114;
const int WM_VSCROLL = 0x0115;
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_HSCROLL)
{
lbl.Text = string.Format("HPos: {0}", HIWORD((int)m.WParam));
}
if (m.Msg == WM_VSCROLL)
{
lbl.Text = string.Format("VPos: {0}", HIWORD((int)m.WParam));
}
base.WndProc(ref m);
}
int HIWORD(int dword)
{
return dword >> 16;
}
}(Scroll to the center and watch the values change)
You can also use the AutoScrollPosition for a ScrollableControl derivative, which includes (but is not limited to) Panel, UserControl, and Form.
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
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I've been trying to start an application running in a minimsed mode and thought i could use ProcessStartInfo to do this. I created a new ProcessStartInfo instance.
ProcessStartInfo startInfo = new ProcessStartInfo("calc");
and set
startInfo.WindowStyle = ProcessWindowStyle.Minimized.
To run the application i used the line
Process.Start(startInfo);
After reading the help file on the ProcessStartInfo class i assumed this would start the application, calc, minimised to the task bar but it doesn't. It starts calc fine but it's just in a normal window.
Any suggestions?
Kev
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This doesn't work with every application. Some application may retain window position and other state information written to storage when closed and reapply that state information when opened. This is often the case.
This posting is provided "AS IS" with no warranties, and confers no rights.
Software Design Engineer
Developer Division Sustained Engineering
Microsoft
[My Articles]
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Thanks for the tip, just tried it with a command window app and it minimizes the window fine. Is there any way to override the loaded state information? It doesn't matter that much because it's an in house application but it would be nice.
Cheers
Kev
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Hi all,
I need to remember the selection ( eg. the radiobutton ) that the user selected even after the program closes so that the next time the program opens, the previously selected option whill be chosen. How can I do this?
There's a property in Visual Studio.NET call dynamic properties, is this the answer to solving this problem? Thanks in advance.
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Why not just save the values in a text or binary file using
System.IO.StreamWriter / StreamReader or
System.IO.BinaryWriter / BinaryReader
Save the settings in form_Closing and read them in again in form_Load.
Kev
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IsolatedStorageFile
"When the only tool you have is a hammer, a sore thumb you will have."
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i have this code in wich i define a local variable t3 of type DataTable.
i want to overwrite this code so that i get the same output BUT i should not define any Local variable !!!
please help me !!
Hint : DataSet can be added to the solution
using System ;
using System.Drawing ;
using System.Collections ;
using System.ComponentModel ;
using System.Windows.Forms ;
using System.Data ;
using System.Net ;
using System.Net.Sockets ;
namespace AddRowTOGrid
{
///
/// Summary description for Form1.
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button btnAdd;
private System.Windows.Forms.TextBox txtSource;
private System.Windows.Forms.DataGrid dataGrid1;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
DataTable t3 = new DataTable();
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.btnAdd = new System.Windows.Forms.Button();
this.txtSource = new System.Windows.Forms.TextBox();
this.dataGrid1 = new System.Windows.Forms.DataGrid();
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
this.SuspendLayout();
//
// btnAdd
//
this.btnAdd.Location = new System.Drawing.Point(88, 80);
this.btnAdd.Name = "btnAdd";
this.btnAdd.TabIndex = 0;
this.btnAdd.Text = "ADD";
this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
//
// txtSource
//
this.txtSource.Location = new System.Drawing.Point(192, 80);
this.txtSource.Name = "txtSource";
this.txtSource.Size = new System.Drawing.Size(104, 20);
this.txtSource.TabIndex = 1;
this.txtSource.Text = "";
this.txtSource.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtSource_KeyPress);
//
// dataGrid1
//
this.dataGrid1.DataMember = "";
this.dataGrid1.Dock = System.Windows.Forms.DockStyle.Bottom;
this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dataGrid1.Location = new System.Drawing.Point(0, 165);
this.dataGrid1.Name = "dataGrid1";
this.dataGrid1.ReadOnly = true;
this.dataGrid1.RowHeaderWidth = 32;
this.dataGrid1.Size = new System.Drawing.Size(400, 112);
this.dataGrid1.TabIndex = 2;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(400, 277);
this.Controls.Add(this.dataGrid1);
this.Controls.Add(this.txtSource);
this.Controls.Add(this.btnAdd);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
this.ResumeLayout(false);
}
#endregion
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void btnAdd_Click(object sender, System.EventArgs e)
{
if ( txtSource.Text.ToString()!="")
{
t3.Rows.Add(getSource());
txtSource.Text="";
}
else
MessageBox.Show("Empty Row Can't Be Added");
}
private string[] getSource()
{
string s = txtSource.Text.ToString();
string [] data = new string[]{s} ;
return data ;
}
private void Form1_Load(object sender, System.EventArgs e)
{
AddCR();
}
private void AddCR()
{
DataTable t = new DataTable("Test");
DataRow dtR;
dtR = t.NewRow();
t.Columns.Add();
dataGrid1.DataSource = t ;
t3 = t ;
}
private void txtSource_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if ( e.KeyChar==13 )
if ( txtSource.Text!="")
{
t3.Rows.Add(getSource());
txtSource.Text="";
}
else
MessageBox.Show("Empty Row Can't Be Added");
}
}
}
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Are you saying that you dont want to define t3 but you still want to display the information that you would have put in t3 in your datagrid?
Any particular reason why you don't want to define a table variable?
Kev
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hi
my supervisor want me to do that , just for security matters
can u help me ?
he told me that i can declare a DataSet in the addRC() function , and retrive this DataSet from the button1_Click() ..
any thing to help me with ??
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What addRC() function??
If you use a dataset then to the best of my knowledge you still need to use a datatable but you don't have to declare tehm first because the DataSet calss has a tables collection.
DataSet.Tables.Add()
You can add a new table to your dataset using the above code
once you have added the table to the dataset you can refer to it by
DataSet.Tables[0];
Then you can set up your table programaticaly and your away.
Hope this solves your problem
Kev
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Help please,
I got some .dll written in Clarion 5.5. Can I (and how!) call it from my c# application.
Boris
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How to convert string or StringBuilder to System.IO.Stream using C# ?
pls guide
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If you haven't the option to use StringWriter, use MemoryStream and Convert.GetBytes
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a WinForm as cool as windows media player and real player using C#?
like their button,like their skin?
thanks!
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how can i make y orientation to up in c# coordinate system ,such as in vc++ ,use SetMapMode(MM_HIMETRIC) functon .
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I have developed an installer for an application that utilizes the cygwin gcc compiler. I have to bundle the gcc together with the application. I have copied the structure of the cygwin gcc directories as it is. There a few shortcuts in the gcc directory structure that point to some directories and files residing inside the gcc directory structure. I also corrected the shorcut targets using orca after making the release msi. The problem is that the compiler doesn't seem to find the files and directories reffered by the shortcuts. If i replace the gcc folder created by the installer with the original gcc directory all works well.
I have made sure that the directory structure is copied as is and double checked it as well.
Kindly help me out of this problem.
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I am trying to figure out the best way to convert a HTML page to an image. I need to be able to do this without actually displaying the URL in the browser and need to capture the entire horizontal and vertical size.
I have see some commercial products that appear to be using the IE control to perform this functionality but I cannot find anything on the web that discusses how this is done.
Does anyone have any ideas about how this can be accomplished?
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Take a screen shot.
/\ |_ E X E GG
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Unfortunately, it is not that simple. I need to be able to capture the entire rendered page regardless of the size - not just what is displayed in a browser window. Additionally, I want to do this entirely in code with no UI. I believe most of the ActiveX controls and other utilities out there are using a hidden IE control but I have not been able to get past the "visible" window problem.
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This has been really puzzling me.
I have a windows services, written in c#.
What I'm trying to do now is to force single-threaded apartment.
So here's how my code look like:-
//Main Entry for Process
static void Main()
{
Thread.CurrentThread.ApartmentState = System.Threading.ApartmentState.STA;
}
When services starts, it will call this:-
protected override void OnStart(string[] args)
{
if (Thread.CurrentThread.ApartmentState == System.Threading.ApartmentState.STA)
{
EventLog.WriteEntry("SvcTest","Single Thread Apartment");
}
else
{
EventLog.WriteEntry("SvcTest",Thread.CurrentThread.ApartmentState.ToString());
}
To my surprise, it's still showing the CurrentTread.ApartmentState as "MTA" (Multi-Threaded Apartment).
Can someone explain this..  .
Stanley
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jbx1828 wrote:
static void Main()
{
Thread.CurrentThread.ApartmentState = System.Threading.ApartmentState.STA;
}
Try changing it to this:
[STAThread]
public static void Main()
{
}
- Nick Parker
My Blog | My Articles
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