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copied!<p>As others stated AdjustWindowRect or AdjustWindowRectEx is the way to go. You need to do special handling if WS_VSCROLL or WS_HSCROLL is set. In my util library I also have special handling for WS_EX_STATICEDGE, but don't ask me where I got this information from (at least it's not in the MSDN documentation for AdjustWindowRect[Ex]).</p> <p>The bug in your latest test was that you are calling CreateWindow the wrong way, it takes a width and heigth, not right and bottom. This should work as required:</p> <pre><code>dwStyle = WS_OVERLAPPED | WS_THICKFRAME | WS_BORDER | WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX; RECT r; r.left = 100; r.top = 100; r.right = 900; r.bottom = 700; BOOL result = AdjustWindowRect( &r, dwStyle, FALSE ); hWindowHandle = CreateWindow( L"CGFramework", wszWndCaption, pWindowData->dwStyle, pWindowData->nPositionX, pWindowData->nPositionY, r.left, r.top, r.right-r.left, r.bottom-r.top, 0, 0, hInstance, 0 ); </code></pre> <p>And just for information, here is the complete sample:</p> <pre><code>#include "stdafx.h" #include <Windows.h> #include <cstdio> #include <cassert> LRESULT CALLBACK MainWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) { switch( uMsg ) { // WM_DESTROY is sent when the window is being destroyed. case WM_DESTROY: PostQuitMessage(0); return 0; default: return DefWindowProc( hWnd, uMsg, wParam, lParam ); } } int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nShowCmd ) { WNDCLASS wc; wc.style = NULL; // CS_HREDRAW | CS_VREDRAW; wc.lpfnWndProc = MainWndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(0, IDI_APPLICATION); wc.hCursor = LoadCursor(0, IDC_ARROW); wc.hbrBackground = CreateSolidBrush(GetSysColor(COLOR_3DFACE)); wc.lpszMenuName = 0; wc.lpszClassName = L"CGFramework"; DWORD dwStyle = WS_OVERLAPPED | WS_THICKFRAME | WS_BORDER | WS_DLGFRAME | WS_SYSMENU | WS_MINIMIZEBOX; if( !RegisterClass(&wc) ) { MessageBox(0, L"RegisterClass FAILED", 0, 0); return E_FAIL; } RECT r; //r.left = 100; //r.top = 100; //r.right = 800; //r.bottom = 600; ////----------------------------- r.left = 100; r.top = 100; r.right = 900; r.bottom = 700; ////----------------------------- //r.left = 100; //r.top = 100; //r.right = 800+GetSystemMetrics( SM_CXSIZEFRAME )*2; //r.bottom = 600+GetSystemMetrics( SM_CYSIZEFRAME )*2+GetSystemMetrics( SM_CYCAPTION ); BOOL result = AdjustWindowRect( &r, dwStyle, FALSE ); assert(result); char buffer[512]; sprintf( &buffer[0], "adjust left=%i, top=%i, right=%i, bottom=%i", r.left, r.top, r.right, r.bottom ); MessageBoxA(0, buffer, 0, 0); HWND hWindowHandle = CreateWindow( L"CGFramework", L"Window Test", dwStyle, r.left, r.top, r.right-r.left, r.bottom-r.top, 0, 0, hInstance, 0 ); if( 0 == hWindowHandle ) { MessageBox(0, L"CreateWindow FAILED", 0, 0); UnregisterClass( wc.lpszClassName, hInstance ); return 0; } assert(GetWindowRect(hWindowHandle, &r)); sprintf( &buffer[0], "wnd left=%i, top=%i, right=%i, bottom=%i", r.left, r.top, r.right, r.bottom ); MessageBoxA(0, buffer, 0, 0); GetClientRect( hWindowHandle, &r ); sprintf( &buffer[0], "style=%08x/%08x, exstyle=%08x, left=%i, top=%i, right=%i, bottom=%i", GetWindowLong(hWindowHandle, GWL_STYLE), dwStyle, GetWindowLong(hWindowHandle, GWL_EXSTYLE), r.left, r.top, r.right, r.bottom ); MessageBoxA(0, buffer, 0, 0); ShowWindow( hWindowHandle, SW_SHOW ); GetClientRect( hWindowHandle, &r ); sprintf( &buffer[0], "left=%i, top=%i, right=%i, bottom=%i", r.left, r.top, r.right, r.bottom ); MessageBoxA(0, buffer, 0, 0); MSG msg; ZeroMemory( &msg, sizeof( MSG ) ); while( msg.message != WM_QUIT ) { while( PeekMessage( &msg, 0, 0, 0, PM_REMOVE ) ) { TranslateMessage( &msg ); DispatchMessage( &msg ); } if( GetAsyncKeyState( VK_ESCAPE ) ) DestroyWindow( hWindowHandle ); } UnregisterClass( wc.lpszClassName, hInstance ); return 0; } </code></pre>

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