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Questions tagged [hwndhost]

34 questions
44
votes
6 answers

Hosting external app in WPF window

We are developing a layout manager in WPF that has viewports which can be moved/resized/etc by a user. Viewports are normally filled with data (pictures/movies/etc) via providers that are under our control in the layout manager. My job is to examine…
Stiggy
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21
votes
6 answers

'{DependencyProperty.UnsetValue}' is not a valid value for property 'FocusVisualStyle'

I have a weird error I'm trying to debug with no luck. I have subclassed hwndhost showing some content, I have the following function in that class to set to fullscreen: private void SetFullScreen(bool enable) { if (enable) …
DaveO
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12
votes
3 answers

How can I convert Win32 mouse messages to WPF mouse events?

I have a Win32 (OpenGL) control that I need to embed in our WPF application. It must respond to, and propogate, mouse and keyboard events. I've created a HwndHost derived instance to host the native window and have overridden the WndProc function in…
Josh
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9
votes
2 answers

Custom dwm drawn window frame flickers on resizing if the window contains a HwndHost element

I've been thinking about this for a couple of days but I think I lack some basic understanding of how windows and wpf work internally to figure this out. The problem is this: I created a window that should let me draw wpf controls on an aero title…
Roald
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8
votes
1 answer

Passing Input events from HwndHost to underlying WPF controls?

is there a way to pass input events (primarily mouse, but eventually keyboard input too) that occurs on a HwndHost back to the underlying WPF controls (e.g. a panel) ? i can hook up to WndProc within the HwndHost and recveive the windows messages.…
Joachim Kerschbaumer
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6
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3 answers

Proper way of hosting an external window inside WPF using HwndHost

I'd like to host a window of an external process inside my WPF application. I'm deriving HwndHost like this: class HwndHostEx : HwndHost { [DllImport("user32.dll")] static extern IntPtr SetParent(IntPtr hWndChild, IntPtr…
Mike G
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5
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4 answers

Forcing initialization of a HwndHost

In my WPF application, I host Win32 content using HwndHost. However, creating a HwndHost does not create the native window. Rather, this is done in the overridden BuildWindowCore() method which is called sometime later by WPF. My hosted content…
Daniel Rose
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5
votes
0 answers

wpf HwndHost MouseMove event before previous element MouseLeave event

We have a Wpf application with an Hwndhost element we use for rendering 3d content via DirectX. We expose a "Panel" interface to clients which contains a MouseEnter and MouseLeave event. For the Hwndhost "panel" we simulate a MouseEnter event when…
Hank
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4
votes
1 answer

WPF interop - HwndHost not automatically destroying the hosted window

I am having trouble ensuring a hosted window is correctly destroyed. I have a HwndHost-derived class that I am displaying in a TabControl (though that is probably irrelevant). I am trying to destroy the hosted content when the tab closes (not when…
Cechner
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4
votes
0 answers

Hosting multiple HwndHost in a WPF application

I am using an hwndhost element to draw DirectX content in a WPF application. When I override the WndProc for HwndHost I do get called with window messages but only by the first instance of hwndhost that I create. Basically on the WM_PAINT message I…
user2043696
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4
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1 answer

Host External Application in WPF TabControl

I have managed to create an example project that uses HwndHost to host Notepad (not what my real project will be embedding) inside a C# WPF tab control. For this, many thanks goes to those who replied to Hosting external app in WPF window (BTW…
Youngy
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2
votes
1 answer

WPF shortcuts are activating when typing in HwndHost parented rich edit control

I am writing a WPF app that wraps up a legacy MFC richtext editor. I have wrapped the richtext editor in a HwndHost. The HwndHost control sits alongside a WPF TabControl. Screenshot of running app at http://www.kempy.co.uk/code/Test.png Apart…
Tim
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2
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2 answers

What renders WinForm controls that are hosted in a WPF application?

From MSDN article I found out that WinForm controls can be hosted in a WPF application using HwndHost. Also, from other internet resources, I found that WPF is rendered using DirectX and WinForm is rendered using GDI+. My question is, what renders a…
Alok
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1
vote
1 answer

Background Color Artifact in Window's Composition Engine (DWM)

Context from Kenny Kerr's blog: Windows Vista introduced a service called the Desktop Window Manager. The name was and continues to be misleading. Think of it as the Windows composition engine or compositor. This composition engine completely…
Tom Huntington
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1
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1 answer

Pass string to dll

How to call a function in c++ dll from C# WPF application with string parametrs? I add dll to C# app through "Add References", not "[DLLImport]" All problem is that C# suggests function with 'sbyte*' parametr, not 'char*'. Functions with 'int'…
EthanHunt
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