gdi

GDI+ is very slow, almost entirely software whereas GDI is highly hardware accelerated. GDI+ is what the Graphics class uses on WinForms and it's just too slow. Has anyone made a .NET GDI library so we can have the speed? [EDIT] Many people are recommending OpenGL/DirectX. A requirement of mine is client compatibility especially remote desktop. AFAIK remote desktop does not support OGL/DirectX out of the box.[/EDIT] Text rendering in GDI+ is slower than GDI. Microsoft realized this after .NET 1.1. That is why .NET 2.0 contains a new TextRenderer class that wraps GDI DrawText . It has two

Is it possible to screen capture a specific window (also possibly of another process)? Currently I am capturing the entire desktop of a specific monitor, however what I truly want is to capture the content of a specific window (regardless of its position). Yes it is. All what you need is get handle to window which you want to capture and use WinAPI function PrintWindow for example: // Get the window handle of calculator application. HWND hWnd = ::FindWindow( 0, _T( "Calculator" )); // Take screenshot. PrintWindow( hWnd, getDC(hWnd), 0 ); Here you have PrintWindow documentation. Deanna Yes,

How can I programmatically detect if a thread has windows handles on it for a given process? spy++ gives me this information but I need to do it programmatically. I need to do this in C#, however the .net diagnostics libs don't give me this information. I imagine spy++ is using some windows api call that I don't know about. I have access to the code of the system I'm trying to debug. I want to embed some code called by a timer periodically that will detect how many thread contain windows handles and log this info. thanks I believe you can use win api functions: EnumWindowsProc to iterate

I have an *.ico file that contains multiple icons in different sizes linked to my executable as a resource. I use this resource to set my application's icon with RegisterClassEx() , i.e.: wcx.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_ICON1)); In addition to that, I'd also like to convert all the single icons in this resource to ARGB pixel arrays. This should be possible by using GetDIBits() on the bitmap returned by GetIconInfo() . However, there is one problem: I need to find out the number of icons in the HICON handle returned by LoadIcon() as well as their sizes. I do not seem to find

In Windows, the CreateFontIndirect() call can silently substitute compatible fonts if the requested font is not requested. The GetObject() call does not reflect this substitution; it returns the same LOGFONT passed in. How can I find what font was actually created? Alternately, how can I force Windows to only return the exact font requested? In Windows, the CreateFontIndirect() call can silently substitute compatible fonts if the requested font is not requested. The GetObject() call does not reflect this substitution; it returns the same LOGFONT passed in. It's not CreateFontIndirect that's

使用graphics.DrawString(pstrText, -1, &font, rectF, &stringFormat, &brush);绘制文字，显示不全。 通过字体平滑处理解决：graphics.SetTextRenderingHint(Gdiplus::TextRenderingHintAntiAlias); 来源： https://www.cnblogs.com/zzx-blog/p/11396895.html

First, sorry if I sound arrogant/rude here. All right, so everyone has run into this by now (I hope); I just haven't found any adequate answer anywhere . We start with a Common Controls 6 manifest and case WM_CTLCOLORSTATIC: if (/* window has WS_EX_TRANSPARENT */) { SetBkMode((HDC) wParam, TRANSPARENT); return (LRESULT) GetStockObject(HOLLOW_BRUSH); } and give our labels WS_EX_TRANSPARENT . They become transparent; so far so good. Now we have to add that style to our checkboxes (because checkboxes respond to that and not to WM_CTLCOLORBTN for some reason). And... the checkboxes become black!