在C++/CLI中执行屏幕截图

#include <Windows.h>

using namespace System;
using namespace System::Drawing;

// 执行屏幕截图并保存为文件
void CaptureScreen(String^ filePath)
{
    // 获取屏幕尺寸
    int screenWidth = GetSystemMetrics(SM_CXSCREEN);
    int screenHeight = GetSystemMetrics(SM_CYSCREEN);

    // 创建设备上下文
    HDC screenDC = GetDC(NULL);
    HDC memDC = CreateCompatibleDC(screenDC);
    HBITMAP bitmap = CreateCompatibleBitmap(screenDC, screenWidth, screenHeight);
    HBITMAP oldBitmap = (HBITMAP)SelectObject(memDC, bitmap);

    // 复制屏幕内容到内存中
    BitBlt(memDC, 0, 0, screenWidth, screenHeight, screenDC, 0, 0, SRCCOPY);

    // 保存为文件
    Bitmap^ screenshot = Image::FromHbitmap(IntPtr(bitmap));
    screenshot->Save(filePath, Imaging::ImageFormat::Png);

    // 清理资源
    SelectObject(memDC, oldBitmap);
    DeleteObject(bitmap);
    DeleteDC(memDC);
    ReleaseDC(NULL, screenDC);
}

int main(array<System::String ^> ^args)
{
    // 执行屏幕截图并保存为文件
    CaptureScreen("screenshot.png");

    return 0;
}