Questions tagged [hwndsource]
10 questions
10
votes
3 answers
PresentationSource.FromVisual(this) returns null value in WPF
I'm using the following code for my:
protected override void OnSourceInitialized(EventArgs e)
{
...
....
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
...
...
}
In some systems the "source" value comes out to be null and i…
AsitK
- 651
- 1
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- 14
4
votes
1 answer
WPF element hosted in ElementHost not redrawing correctly
I'm writing a program to implement COM component in C#. This component provides a UI component too. In the interest of making it easy to implement future additions to the component, I decided to write the UI in Xaml using WPF and wrapping it in an…
Tym Lipari
- 41
- 1
4
votes
1 answer
Hosting WPF UserControl in Win32 application using HwndSource
I need to host my WPF UserControl in other window by Handle.
I've tried to use HwndSource:
var userControl = new MyUserControl();
var parameters = new HwndSourceParameters();
parameters.WindowStyle = 0x10000000 |…
voidmain
- 81
- 6
1
vote
1 answer
Creating HwndSource directly
I'm trying to create a Window by creating HwndSource directly. At the moment I have an alternative solution - inheriting from Window class, but I'm just curious what's wrong with my HwndSource implementation. Since Window uses HwndSource in its…
nevermind
- 2,300
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1
vote
1 answer
How do I get a WPF Window "from" an HwndSource I create directly?
If I create an HwndSource directly, have I then also created a WPF Window that I can now access from code? If so, how can I access it?
Or do I now need to somehow "add" a WPF Window to that HwndSource? If so, how do I do this?
I have studied the…
Cardinal Fang
- 283
- 2
- 12
0
votes
0 answers
How to change HwndSource RootVisual
I have a HwndSource and I have two WPF user controls, I would like to set one of them the RootVisual of this HwndSource and sometimes switch between these two WPF user controls.
Just wonder am I able to do that?
My two WPF user controls are:…
Xiangtianyu Kong
- 3
- 2
0
votes
0 answers
WPF, Hook Window, Popup
In App.xaml.cs or in another starting class instance you need add:
var field = typeof(PresentationSource).GetField("RootSourceProperty", BindingFlags.NonPublic | BindingFlags.Static);
var property = (DependencyProperty)field.GetValue(null);
…
Smagin Alexey
- 305
- 2
- 6
0
votes
0 answers
How to do work on the WPF UI thread when hosted in unmanaged C++/CLI application
I have a WPF log viewer user control that receives log messages via named pipes. The pipe messages are received and processed on a thread pool thread and then I pass it to the UI for display with an Application.Current.Dispatcher.Invoke call. Works…
Gerhard Wessels
- 681
- 1
- 9
- 18
0
votes
0 answers
How to change HwndSource window size C#
I created a window as a child window of a C++ window handler in C#, the code is like:
public void CreateHostHwnd(IntPtr parentHwnd)
{
// Set up the parameters for the host hwnd.
parentHandle = parentHwnd;
…
Xiangtianyu Kong
- 3
- 2
0
votes
1 answer
Send window message to WPF application from another WPF application
I used this code in the server side
void Window_Loaded(object sender, RoutedEventArgs e)
{
HwndSource source = HwndSource.FromHwnd(new WindowInteropHelper(this).Handle);
source.AddHook(new HwndSourceHook(WndProc));
}
…
MElagder
- 29
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