使用DWM实现 Aero Glass效果（源代码）

#include <Windows.h> #include <tchar.h> #include <dwmapi.h> #include <GdiPlus.h> #include <VSStyle.h> #include <vssym32.h> using namespace Gdiplus; const LPCTSTR WND_CLASS_NAME = _T("DWMComposition"); HWND g_hWnd = NULL; Bitmap *bmp = NULL; LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); HRESULT EnableBlurBehind(HWND hWnd, HRGN hRgn = NULL); HRESULT RegisterThumbnail(HWND hWnd); void DrawGlowingText(HDC hDC, LPWSTR szText, RECT &rcArea, DWORD dwTextFlags = DT_LEFT | DT_VCENTER | DT_SINGLELINE, int iGlowSize = 10); int WINAPI _tWinMain( HINSTANCE, HINSTANCE, LPTSTR, int ) { //初始化GDI+ ULONG_PTR token; GdiplusStartupInput input; GdiplusStartup(&token, &input, NULL); //加载图片 bmp = Bitmap::FromFile(L"Ferrari.png", false); WNDCLASSEX wcex = {0}; wcex.cbSize = sizeof(WNDCLASSEX); wcex.lpfnWndProc = WndProc; wcex.lpszClassName = WND_CLASS_NAME; wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION); wcex.hIconSm = wcex.hIcon; RegisterClassEx(&wcex); g_hWnd = CreateWindow(WND_CLASS_NAME, _T("This is 标题"), WS_OVERLAPPEDWINDOW, 100, 100, 800, 450, NULL, NULL, GetModuleHandle(NULL), NULL); ShowWindow(g_hWnd, SW_SHOW); UpdateWindow(g_hWnd); MSG msg = {0}; while(msg.message != WM_QUIT) { if(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } } UnregisterClass(WND_CLASS_NAME, GetModuleHandle(NULL)); //释放图片 delete bmp; //关闭GDI+ GdiplusShutdown(token); return 0; } HRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch(msg) { case WM_DESTROY: PostQuitMessage(0); return 0; break; case WM_PAINT: { PAINTSTRUCT ps; HDC hDC = BeginPaint(hWnd, &ps); //不要直接使用窗口句柄创建Graphics，会导致闪烁 Graphics graph(hDC); //首先清除客户区域 RECT rcClient; GetClientRect(hWnd, &rcClient); BOOL bCompEnabled; DwmIsCompositionEnabled(&bCompEnabled); SolidBrush br(bCompEnabled? Color::Black : Color::DarkGray); graph.FillRectangle(&br, Rect(rcClient.left, rcClient.top, rcClient.right, rcClient.bottom)); //绘制图形 int width = bmp->GetWidth(); int height = bmp->GetHeight(); Rect rc(30, 30, width, height); graph.DrawImage(bmp, rc, 0, 0, width, height, UnitPixel); //绘制文本 RECT rcText = {10, 10, 300, 40}; DrawGlowingText(hDC, L" 一点点中文 and some english", rcText); EndPaint(hWnd, &ps); } break; case WM_CHAR: switch(wParam) { case 'q': //开启客户区毛玻璃效果 { RECT rect; GetWindowRect(hWnd, &rect); int width = 300, height = 200; //居中椭圆形 HRGN hRgn = CreateEllipticRgn((rect.right - rect.left)/2 - width/2, (rect.bottom - rect.top)/2 - height/2, (rect.right - rect.left)/2 + width/2, (rect.bottom - rect.top)/2 + height/2); EnableBlurBehind(hWnd, hRgn); DeleteObject(hRgn); } break; case 'w': //窗口边框向客户区扩展 { MARGINS margins = {50, 50, 50, 50}; MARGINS margins2 = {-1}; //将扩展到整个客户区 DwmExtendFrameIntoClientArea(hWnd, &margins2); } break; case 'e': //注册缩略图关联 RegisterThumbnail(hWnd); break; case 'x': //重新绘制窗口，测试用 InvalidateRect(hWnd, NULL, false); break; } break; } return DefWindowProc(hWnd, msg, wParam, lParam); } HRESULT EnableBlurBehind( HWND hWnd, HRGN hRgn ) { DWM_BLURBEHIND bb = {0}; bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION; bb.fEnable = true; bb.hRgnBlur = hRgn; return DwmEnableBlurBehindWindow(hWnd, &bb); } HRESULT RegisterThumbnail( HWND hWnd ) { HRESULT hr = S_OK; HTHUMBNAIL thumbnail = NULL; HWND hWndSrc = FindWindow(_T("QQPlayer Window"), NULL); hr = DwmRegisterThumbnail(hWnd, hWndSrc, &thumbnail); if (SUCCEEDED(hr)) { RECT rc; GetClientRect(hWnd, &rc); DWM_THUMBNAIL_PROPERTIES dskThumbProps; dskThumbProps.dwFlags = DWM_TNP_RECTDESTINATION | DWM_TNP_VISIBLE | DWM_TNP_OPACITY ; dskThumbProps.fVisible = TRUE; dskThumbProps.opacity = 200; dskThumbProps.rcDestination = rc; hr = DwmUpdateThumbnailProperties(thumbnail,&dskThumbProps); } return hr; } //绘制发光文字 void DrawGlowingText( HDC hDC, LPWSTR szText, RECT &rcArea, DWORD dwTextFlags , int iGlowSize ) { //获取主题句柄 HTHEME hThm = OpenThemeData(GetDesktopWindow(), L"TextStyle"); //创建DIB HDC hMemDC = CreateCompatibleDC(hDC); BITMAPINFO bmpinfo = {0}; bmpinfo.bmiHeader.biSize = sizeof(bmpinfo.bmiHeader); bmpinfo.bmiHeader.biBitCount = 32; bmpinfo.bmiHeader.biCompression = BI_RGB; bmpinfo.bmiHeader.biPlanes = 1; bmpinfo.bmiHeader.biWidth = rcArea.right - rcArea.left; bmpinfo.bmiHeader.biHeight = -(rcArea.bottom - rcArea.top); HBITMAP hBmp = CreateDIBSection(hMemDC, &bmpinfo, DIB_RGB_COLORS, 0, NULL, 0); if (hBmp == NULL) return; HGDIOBJ hBmpOld = SelectObject(hMemDC, hBmp); //绘制选项 DTTOPTS dttopts = {0}; dttopts.dwSize = sizeof(DTTOPTS); dttopts.dwFlags = DTT_GLOWSIZE | DTT_COMPOSITED; dttopts.iGlowSize = iGlowSize; //发光的范围大小 //绘制文本 RECT rc = {0, 0, rcArea.right - rcArea.left, rcArea.bottom - rcArea.top}; HRESULT hr = DrawThemeTextEx(hThm, hMemDC, TEXT_LABEL, 0, szText, -1, dwTextFlags , &rc, &dttopts); if(FAILED(hr)) return; BitBlt(hDC, rcArea.left, rcArea.top, rcArea.right - rcArea.left, rcArea.bottom - rcArea.top, hMemDC, 0, 0, SRCCOPY | CAPTUREBLT); //Clear SelectObject(hMemDC, hBmpOld); DeleteObject(hBmp); DeleteDC(hMemDC); CloseThemeData(hThm); }