Comments by Jibrohni (Top 39 by date)

That's great - it's working just as I'd hoped although it seems to replace the original datagrid with the second, rather than display both concurrently. Any ideas? They should display in different row of my grid but it doesn't seem to be working that way.

UPDATE: Ok, using borders on the two usercontrols it seems that one doesn't actually stretch to fill the mainGrid. So when the animation takes place it's forcing the "out" rectangle to have the dimensions of the "in" rectangle. Any easy way of preventing this? I could perhaps keep track of the dimensions in a helper class?

It seems to report e.originalsource as the scrollviewer. Maybe because the images are added at runtime in code behind.

No, I've done that already within my form, but I then wish to save that resultant image as on jpg.

I've got the following code that I thought would overlay the .jpg and .png, but it's just outputting a black image. Can anyone tell me how to fix this?

public static void Overlay(Image first, Image second)
{
DrawingVisual dVis1 = new DrawingVisual();
DrawingContext drawingContext1 = dVis1.RenderOpen();
drawingContext1.DrawImage(first.Source, new Rect(0, 0, first.Width, second.Height));
RenderTargetBitmap rtb1 = new RenderTargetBitmap((int)first.ActualWidth, (int)first.ActualHeight, 96, 96, PixelFormats.Pbgra32);
rtb1.Render(dVis1);
BitmapFrame frame1 = BitmapFrame.Create(rtb1);

DrawingVisual dVis2 = new DrawingVisual();
DrawingContext drawingContext2 = dVis2.RenderOpen();
drawingContext2.DrawImage(second.Source, new Rect(0, 0, first.Width, second.Height));
RenderTargetBitmap rtb2 = new RenderTargetBitmap((int)first.ActualWidth, (int)first.ActualHeight, 96, 96, PixelFormats.Pbgra32);
rtb2.Render(dVis2);
BitmapFrame frame2 = BitmapFrame.Create(rtb2);

BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(frame1);
encoder.Frames.Add(frame2);

//Image newImage = new Image();
//newImage.Source = rtb;
using (var stream = File.Create(@"C:\Users\Jibrohni\Documents\Visual Studio 2010\Projects\LayerImages\Images\newImage.png"))
{
encoder.Save(stream);
}

}

Sorry, I did specify screen width, when I meant MainWindow width.

I'm not looking to use resolution - I'm looking to use the current width of the MainWindow.xaml - is that not different? I thought I'd be able to bind an integer variable to the ActualWidth property of the Window and use that in the ThicknessAnimation definitions.

I received this on another forum, which has really helped me:

"Hi Jib,

You can name the CheckBox in the control template and use FrameworkTemplate.FindName method to retrieve the CheckBox.

I would prefer bind the CheckBox to a custom attached property on the TreeViewItem. Then we can just manupilate the TreeViewItem instead.

Retrieving TreeViewItem is not that convenient, so I would probably also bind that custom attached property to the underlying data. Then we only need to process the data.

I suggest you to check out Josh Smith's Article about CheckBoxes in a WPF TreeView. It's a very good sample.

Best regards,
" ~ courtesy of Min Zhu

We're a global company with 50,000+ users world-wide. In the ideal world I agree with you, but sadly I suspect not even 1% of the users are capable of managing all of their data perfectly (or at all). They keep their main work files in their "Documents" folder, however many of them use bespoke applications that will write necessary files elsewhere. We have a huge file exclusion list, along with folder exclusions. We handle .pst files very differently to regular user files and re-attach them after the data migration. It's effectively written so that the users don't have to be torn away from their day jobs to deal with this task.

Mark, great response! That's given me some good routes to check-out. I thought estimating the completion time would be hit or miss, but so far it's just been miss or miss!

Many thanks,

Jib

We considered using the Windows utility, but this allows us to perform customisation specifically catering for our business needs. (It handles our specific file structures and files differently). Also allows us to change it further down the line where it might be necessary.

Nishant, I think you've better undertood my problem. But for more clarity I shall explain again.

Let's say I have 3 applications open, the topmost is Internet Explorer, second is my application, and thirdly is an Explorer window. So I wish to view my application by minimizing the IE window. For some reason this drops my application behind the Explorer window that was at the back to start with. I haven't even interacted with my application, but it's affected?

I agree that the icon issue is most likely something different. Now my application uses WindowStyle - SingleBorderWindow and implements a Glass Effect:

public static bool ExtendGlassFrame(Window window, Thickness margin)
{
if (IsGlassEnabled())
{

if (!DwmIsCompositionEnabled())
return false;
IntPtr hwnd = new WindowInteropHelper(window).Handle;
if (hwnd == IntPtr.Zero)
throw new InvalidOperationException("The Window must be shown before extending glass.");
// Set the background to transparent from both the WPF and Win32 perspectives
window.Background = Brushes.Transparent;
HwndSource.FromHwnd(hwnd).CompositionTarget.BackgroundColor = Colors.Transparent;
MARGINS margins = new MARGINS(margin);
DwmExtendFrameIntoClientArea(hwnd, ref margins);
return true;
}
else
return false;
}

It's a WCF/WPF application that transfers files from one pc to another. If I minimize an external window such as IE to see my applications UI then it doesn't minimize my applications window, but puts it to the back of all other open desktop windows? Sometimes it loses the start-bar icon too?

Thanks again John - although I think I can deal with a black check rather than the hoped for dark blue one...

thanks, that looks useful.

Thanks John. I wondered if there was some simpler attribute or keyword. May as well comment it out!

I found this? :

During program development, programmers often find it helpful to comment out large portions of code to prevent it from being compiled but if the code contains comments, /* and */ or //, they cannot be used to accomplish this task.

Instead, the programmer can use the following preprocessor construct:

#if 0

code prevented from compiling...

#endif

To enable the code to be compiled, the 0 in the preceding construct is replaced by 1.

Conditional compilation is commonly used as a debugging aid.

Thanks. C++ looks so scary compared to C#!

So in my dll would I just want to copy the example you provided but change WM_KILLFOCUS for WM_PAINT?

thanks, the Windows Hook part looks ideal. Plenty of other interesting stuff too - Bonus!

All the best!

Ok thanks, I'll try that. I guess I can keep a line count so that I know if I've missed a line if necessary. I'll let you know how I get on. Thanks again.

Thanks Dave,

Might it help if I make sure it's open for reading only? Then perhaps it won't be locked.

Ok, I'll look into that. Thanks John.

I also read that keybd_event has been deprecated by SendInput. Would you recommend switching over to this method instead?

Thank you very much. Although I couldn't actually find .GetPixelInformation I simply changed the line:

BitmapData data = NewBitmap.LockBits(new Rectangle(0, 0, NewBitmap.Width, NewBitmap.Height), ImageLockMode.ReadWrite, NewBitmap.PixelFormat);

to:

BitmapData data = NewBitmap.LockBits(new Rectangle(0, 0, NewBitmap.Width, NewBitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppRgb);

So this keeps a standard bitdepth value.

And I agree with the error catch - I'd just put it there to see if I could handle the error (which I couldn't).

But yeah, GetPixelFormatSize didn't seem available to me???

Thanks again.

Here's my user control:

<usercontrol x:class="BT_Control_Panel_1._1___User_Control.User_Controls.OptionControl"
="" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:ignorable="d" d:designheight="300" d:designwidth="300" width="300">
<grid name="mainOptionGrid">
<grid.rowdefinitions>
<rowdefinition name="row1">

<grid.columndefinitions>
<columndefinition name="iconCol" width="100">
<columndefinition name="textCol" width="200">

<Image Name="iconImage" Width="50" Height="50" VerticalAlignment="Top" HorizontalAlignment="Center" Margin="25,6,25,0" Panel.ZIndex="1">
<!--Icon to be inserted here-->
</Image>
<stackpanel name="textStackPanel" grid.column="1" width="200" panel.zindex="1">
<!--Add in custom textblocks here. First addition should be the header-->

<border name="bdrEdge" grid.columnspan="2" padding="20" borderthickness="1" borderbrush="Black" visibility="Hidden" panel.zindex="2">



Basically I require the border highlight event to trigger when the mouse enters the Grid's domain. This border needs to stay visible whilst also allowing for the mouseenter/mouseleave events to fire for the textblocks that I programmatically add to the textstackpanel.

But as the textblocks are the upper most entities, the grid loses it's mouseenter/mouseleave capabilities, hence no longer does the border show. And as the textblocks aren't always added in the same numbers per user control, there is quite often whitespace at the bottom of the usercontrol where the border doesn't fire if I try firing the event from the textblocks' mouseenter events.

I do understand that - thank you so much for your time. It works wonderfully now.

It's sometimes the simple things that frustrate me the most - although I shall probably take that comment back, as my next port of call is Delegates and Events...

Thanks again!

Anyone?

code now included - thanks

exactly the same - I added 4 on formload event and it shows the same problem

private void btnAddPump_Click(object sender, EventArgs e)
{
//creates a petrolpump control instance and assigns a pump identifier

//works without parameters
//tlpPumpControlHolder.Controls.Add(new PetrolPump());
PetrolPump pumpInstance = new PetrolPump(_pumpIndex);
tlpPumpControlHolder.Controls.Add(pumpInstance);
//increment unique identifier
_pumpIndex++;

//needs calling to update fuel list for new pumps
UpdatePumpsWithFuels();

}

dynamically

I haven't changed anything - When I create a new Pump control I add it to a tablelayoutpanel control list. But it's as though the controls are all one and the same??

Thanks to both. I managed to get it runnning on 8 seperate threads (seemed to give the quickest results). What started at 1 min 40 is now down to 26 seconds. I'm going to start again as I'm still perfecting my use of encapsulation amongst other concepts.

I had a quick look at the parallel For but it's still a little above my station. I'll repost when I get back to this point, hopefully I'll have streamlined my code as I want it ideally down to no more than 10 seconds.

Ok, great, so how do I then draw a new user control for each of them in my usercontrol List?

PumpControlList

I.e, say I want to draw them at a width of 240 pixels each time, how would I code the following?

foreach (PumpControl p in PumpControlList)
{

}