GUI-Win32-实现完全空白窗口

#include<Windows.h> #include<d2d1.h> #pragma comment(lib,"d2d1.lib") #include<dwmapi.h> #pragma comment(lib,"dwmapi.lib") ID2D1Factory* D2DFactory;//D2D工厂 ID2D1HwndRenderTarget* RenderTarget;//渲染目标 ID2D1SolidColorBrush* SolidBrush;//纯色画刷 void D2DCreate(HWND hWnd) { D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &D2DFactory);//创建工厂 D2DFactory->CreateHwndRenderTarget(D2D1::RenderTargetProperties(), D2D1::HwndRenderTargetProperties(hWnd, D2D1::SizeU()), &RenderTarget);//创建渲染目标 RenderTarget->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::Red), &SolidBrush);//创建画刷 } void D2DPaint() { RenderTarget->Resize(D2D1::SizeU(100, 100));//设置窗口大小 RenderTarget->BeginDraw();//开始绘制 RenderTarget->Clear(D2D1::ColorF(D2D1::ColorF::White));//清理窗口背景色 RenderTarget->EndDraw();//结束绘制 } LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch (uMsg) { case WM_NCPAINT:D2DPaint(); break;//D2D绘制 //注意缺陷：窗口最大化后的大小不对，四周大了8像素宽度，请修改绘制大小，完美解决办法没有 case WM_NCCALCSIZE:if (wParam)return WVR_REDRAW; return 0; case WM_NCHITTEST:return HTCAPTION;//鼠标位置测试，可自行扩展，如鼠标调整窗口大小 case WM_DESTROY:PostQuitMessage(0); } return DefWindowProc(hWnd, uMsg, wParam, lParam); } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int ShowCmd) { WNDCLASS wndclass = { 0 }; wndclass.hCursor = LoadCursor(0, IDC_ARROW); wndclass.hInstance = hInstance; wndclass.lpfnWndProc = WndProc; wndclass.lpszClassName = "win"; RegisterClass(&wndclass); HWND hWnd = CreateWindow("win", 0, WS_OVERLAPPEDWINDOW, 183, 84, 1000, 600, 0, 0, hInstance, 0); D2DCreate(hWnd);//D2D创建 ShowWindow(hWnd, SW_SHOW); UpdateWindow(hWnd); MARGINS margins = { 1 }; DwmExtendFrameIntoClientArea(hWnd, &margins);//绘制阴影的关键 MSG msg; while (GetMessage(&msg, 0, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return 0; }