hwnd

My WPF application leaks memory at about 4kb/s. The memory usage in Task Manager climbs constantly until the application crashes with an "Out of Memory" exception. By doing my own research I have found that the problem is discussed here: Track down memory leak in WPF and #8 here: http://blogs.msdn.com/jgoldb/archive/2008/02/04/finding-memory-leaks-in-wpf-based-applications.aspx The problem described is: This is a leak in WPF present in versions of the framework up to and including .NET 3.5 SP1. This occurs because of the way WPF selects which HWND to use to send messages from the render thread

I create a global hot key to show a window by PInvoking RegisterHotKey() . But to do this I need that window's HWND , which doesn't exist until the window is loaded, that means shown for the first time. But I don't want to show the window before I can set the hot key. Is there a way to create a HWND for that window that is invisible to the user? Patrick Klug If you are targeting .NET 4.0 you can make use of the new EnsureHandle method available on the WindowInteropHelper : public void InitHwnd() { var helper = new WindowInteropHelper(this); helper.EnsureHandle(); } (thanks to Thomas Levesque

How can I get the HWND of application, if I know the process ID? Anyone could post a sample please? I'm using MSV C++ 2010. I found Process::MainWindowHandle but I don't know how to use it. HWND g_HWND=NULL; BOOL CALLBACK EnumWindowsProcMy(HWND hwnd,LPARAM lParam) { DWORD lpdwProcessId; GetWindowThreadProcessId(hwnd,&lpdwProcessId); if(lpdwProcessId==lParam) { g_HWND=hwnd; return FALSE; } return TRUE; } EnumWindows(EnumWindowsProcMy,m_ProcessId); You can use EnumWindows and GetWindowThreadProcessId() functions as mentioned in this MSDN article . A single PID (Process ID) can be associated with

I'm looking for a way to get the tooltip control (if any) which is associated with a given HWND. The text of the tooltip control would be sufficient, too. The closest thing I found is the TTM_GETTEXT message, but it's meant to be sent to the tooltip control itself instead of the tool it's associated with. I don't have a handle to the tooltip control though. Does anybody know how to do this? All this is done using plain Windows API in C++. JTeagle There doesn't seem to be a specific message to get the tip or its text from the control, but this is how MFC's CWnd class implements OnToolHitTest(),

I am trying to embed a HWND (Window Handle) in a JPanel. Actually, I can embed my HWND into a JFrame, but the embedded window alway stay on top of the other component and I can't move it. If a try to remove all the child component of my JFrame, the HWND stay there. The HWND seems to be paint on top of the JFrame and not as one of is child. To embed the HWND into the JPanel I use User32 through jna: User32.SetParent(iage.getRenderHwnd(), (int) getGUIHwnd(j)); And I use this to get the HWND of my JFrame: j.getPeer() != null ? ((WComponentPeer) j.getPeer()).getHWnd(): 0; Is there a way to embed a

This short MSDN documentation says CoreWindow has ICoreWindowInterop that obtains the handle HWND to the CoreWindow. But I cannot find references on how to get it (C#). Help, please. https://msdn.microsoft.com/en-us/library/dn302119(v=vs.85).aspx This COM interface is only directly accessible to C++ code. In C# you have to declare it yourself and make it match the interface declaration in C:\Program Files (x86)\Windows Kits\10\Include\10.0.10586.0\winrt\CoreWindow.idl. Like this: using System.Runtime.InteropServices; ... [ComImport, Guid("45D64A29-A63E-4CB6-B498-5781D298CB4F")] [InterfaceType