如何将C ++代码转换为C＃

Simpal库马尔

我在C ++中有下面的代码（不是完整的代码），想转换成C＃。我只想使用user32.dll

C ++

HBITMAP image::takeImage(HWND handle, int x, int y, int w, int h, LPCWSTR fname ){
    HDC hdcs = GetWindowDC(handle);
    HDC hdcm = CreateCompatibleDC(hdcs);
    HDC hdcp = CreateCompatibleDC(hdcs);
    RECT rect;
    GetWindowRect(handle, &rect);
    hBitmap = CreateCompatibleBitmap( hdcs, w, h);
    hBitmap2 = CreateCompatibleBitmap(hdcs, rect.right - rect.left, rect.bottom - rect.top);
    HBITMAP hBitmapOld = (HBITMAP)SelectObject(hdcm, hBitmap);      
    int error = GetObject(hBitmap, sizeof(BITMAP), &Bitmap);
    bool ret = PrintWindow(handle, hdcp, NULL);
    BitBlt(hdcm, 0, 0, w, h, hdcp, x, y, SRCCOPY);
    return ""; //something
}

我在下面的C ++函数的C＃中寻找等效项。

GetWindowDC-可以在这里找到此功能

[DllImport("user32.dll")]
static extern IntPtr GetWindowDC(IntPtr hWnd);

CreateCompatibleDC
GetWindowRect
CreateCompatibleBitmap
SelectObject
GetObject
PrintWindow
BitBlt

我从未从事过C ++。只是寻找等效的函数名称或文档链接。谢谢。

乱画

那是你需要的吗？

gdi32.dll

[DllImport("gdi32.dll",EntryPoint="DeleteDC")]
public static extern IntPtr DeleteDC(IntPtr hDc);

[DllImport("gdi32.dll",EntryPoint="DeleteObject")]
public static extern IntPtr DeleteObject(IntPtr hDc);

[DllImport("gdi32.dll",EntryPoint="BitBlt")]
public static extern bool BitBlt(IntPtr hdcDest,int xDest,
    int yDest,int wDest,int hDest,IntPtr hdcSource,
    int xSrc,int ySrc,int RasterOp);

[DllImport ("gdi32.dll",EntryPoint="CreateCompatibleBitmap")]
public static extern IntPtr CreateCompatibleBitmap(IntPtr hdc,
    int nWidth, int nHeight);

[DllImport ("gdi32.dll",EntryPoint="CreateCompatibleDC")]
public static extern IntPtr CreateCompatibleDC(IntPtr hdc);

[DllImport ("gdi32.dll",EntryPoint="SelectObject")]
public static extern IntPtr SelectObject(IntPtr hdc,IntPtr bmp);

user32.dll

[DllImport("user32.dll", EntryPoint="GetDesktopWindow")]
public static extern IntPtr GetDesktopWindow();

[DllImport("user32.dll",EntryPoint="GetDC")]
public static extern IntPtr GetDC(IntPtr ptr);

[DllImport("user32.dll",EntryPoint="GetSystemMetrics")]
public static extern int GetSystemMetrics(int abc);

[DllImport("user32.dll",EntryPoint="GetWindowDC")]
public static extern IntPtr GetWindowDC(Int32 ptr);

[DllImport("user32.dll",EntryPoint="ReleaseDC")]
public static extern IntPtr ReleaseDC(IntPtr hWnd,IntPtr hDc);

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