I want to use WPF windows in a legacy win32 application.
I'd like to behave them in a similar way, like the WPF window always being displayed on top of the win32 window.
For this I'd like to set the owner of the WPF window to the win32 windows, but I got no idea how to achieve this.
Any help here?
Since the answer is hidden behind some link, here the code that did the trick:
System::Windows::Interop::WindowInteropHelper^ helper = gcnew System::Windows::Interop::WindowInteropHelper(myWpfChildWindow);
helper->Owner = (System::IntPtr)myMainWindowHWND;
This article shows how to get the handles for both as well as how to make the WPF window become a transparent overlay for the win32 window.
http://dedjo.blogspot.com/2007/04/transparent-wpf-control-over-unmanaged.html
This article uses a WindowInteropHelper to accomplish similar functionality.
http://blogs.msdn.com/wpfsdk/archive/2007/04/03/centering-wpf-windows-with-wpf-and-non-wpf-owner-windows.aspx
MSDN page on WindowInteropHelper:
http://msdn.microsoft.com/en-us/library/system.windows.interop.windowinterophelper.aspx
Hope that helps,
Ed
How about SetParent()? I know works when making a WPF window an MDI Child of a Windows Form.
Related
I have created an application which has one window. Click of a button in this window should open another dockable window. Is there a simple way to do this? I found a CodeProject which does this, but this seems a lot of functionality for me.
http://www.codeproject.com/Articles/140209/Building-a-Docking-Window-Management-Solution-in-W
Are you looking for something like AvalonDock ?
Here's the NuGet: http://www.nuget.org/packages/AvalonDock/
I currently have LibVLC setup with a C# project and it uses a Panel to output the video stream. As WPF is better suited for some GUI options I want to implement, I have now switched my project over to it. However, I noticed that WPF Controls don't have handles like C# controls do.
I have found these...
http://wpfmediakit.codeplex.com/
http://videorendererelement.codeplex.com
However I am new to WPF and have no idea how to actually integrate them. What would be the best approach to output the video streams from LibVlC in WPF?
I managed to resolve this by using a WindowsFormsHost control and just use a Panel as I was doing previously in my Win Forms application. Still seems that using something else native to WPF would be preferable, but for now this is working fine.
I'm afraid that's not possible...
Since WPF controls are not Win32 controls behind the scenes (the MS specific HWND or the more general HANDLE), like most WinForms controls are, providing a HANDLE to libvlc for rendering is not possible or not easy.
See here
All WPF elements on the screen are ultimately backed by a HWND. When you create a WPF Window, WPF creates a top-level HWND, and uses an HwndSource to put the Window and its WPF content inside the HWND. The rest of your WPF content in the application shares that singular HWND. An exception is menus, combo box drop downs, and other pop-ups. These elements create their own top-level window, which is why a WPF menu can potentially go past the edge of the window HWND that contains it.
You could try to use a Window and attempt to get its Handle like this:
IntPtr windowHandle = new WindowInteropHelper(windowInstance).Handle
Then pass this handle to libvlc. Remember to obtain this handle no sooner than inside the Loaded event of the window, see here
But this will limit you to using a top level Window control, which doesn't seem to be what you want.
I've done some searching, but I can't find an exact answer on this. In my C# WPF app, I get the HWND pointer and pass it to a C dll. That C dll then attempts to use GDI calls to render an overlay of sorts on my window. There are no errors, but nothing appears. If I switch to a Windows Form, the dll can render over it fine. If I host a WindowsFormHost control and use the hwnd from there I have the same effect. I've seen information on the HwndHost control but it doesn't really look like what I want. Perhaps someone with more knowledge of that control can tell me differently. I read somewhere that an hwnd used for DirectX rendering (like WPF) can't also use GDI. Does this make my scenario impossible? I could fake it by overlaying a borderless form over the WPF window, but obviously that wouldn't be too pretty. Any thoughts or ideas?
You can't have WPF and GDI rendering to the same hwnd but you can easily have a child hwnd inside of your WPF app and let GDI render into it. Take a look at HwndHost for doing that. The section "Hosting a Microsoft Win32 Window in WPF" in this article has a little more details. It also talks about the various issues you'll run into (like airspace) when doing this type of interop.
I'm creating a HUD window for inspecting biz entities in my WinForms application.
I wanted to have a completely different style of window (minimize the content area and showing only the TitleBar, no system buttons, etc) so I created a WPF application for this.
The problem is that I want this Window to 'live' inside my WinForms application. I can't just add the WPF as an OwnedForm or set the main Form as the Owner of the WPF window.
So, how can achive this?
EDIT: Thanks to pst I found the answer. Here is the snippet:
System.Windows.Forms.Integration.ElementHost.EnableModelessKeyboardInterop(_inspector);
WindowInteropHelper inspectorHelper = new WindowInteropHelper(_inspector);
inspectorHelper.Owner = this.Handle;
_inspector.Show();
A WPF Window has a Win32-window handle/context.
See WindowInteropHelper. You can use this with Win32 (or perhaps there is WinForms support?) to set the owner window of the WPF Window. Be aware the handle does not exist until the "source initialized" (?) event.
However, using just WinForms, you may be able to customize the titlebar as much as you need (you can overwrite the drawing itself via Win32, and I think you lose all the control boxes without going this far).
There are lots of google results on this topic if you use the correct keywords.
Is there a way to host a WPF window inside another WPF window. I have a couple of somewhat complex forms in place. But now to simplify things I am trying to merge a few of them as tabpages inside one 'Dashboard' form.
Please note that I am not trying to host a Windows Form, but another WPF window
If you want tabpages, why not use a TabControl with UserControls inside ? If you need to transform one of these tabs to a floating window, just put the UserControl in a new Window...
Can I answer this question with another question; why would you not create them as controls rather than other WPF windows, that you want to host in the main WPF window?
a bit late on this, but I guess with WindowsForms interop you can put in WPF a WinForms control host and in that host put a WinForms control that hosts the handle of a WPF window
I think what you're asking for is MDI, Multiple Document Interface. Something like this might help.
Do note, however, that the MDI paradigm is largely shunned these days. There are usually better ways to achieve the same functionality.
I think you want to hosting contents of WPF Window1.xaml (page1.xaml) inside within another WPF Window.
Well...you can use Navigation. Instead running window1.xaml contents inside tab then you can work with your data inside Navigation. Navigation can run within WPF Window Application. You just design your form / UI in page1.xaml.
one another..MDI old and rusty. We want clear of top window nowadays.