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Windows 10版本1703(15063.138)上的bitblt失敗

[英]bitblt failed on Windows 10 version 1703 (15063.138)

使用Visual Studio 2017 vc141,以下代碼應從游戲前窗口獲取屏幕截圖,但現在它返回黑白圖像。

游戲唯一的問題(嘗試過OpenGL和Vulkan,ogl返回黑色,vulkan返回白色)

在升級到Windows 10 1703之前,它可以在Windows 10 1607和Windows 7 sp1上運行

#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>

碼:

BOOL ScreenShot(cv::Mat *img, HWND hWnd = NULL) {
    HBITMAP hBitmap;
    HDC hdcSys = GetDC(hWnd);
    HDC hdcMem = CreateCompatibleDC(hdcSys);

    void *ptrBitmapPixels;
    BITMAPINFO bi;
    HDC hdc;

    RECT rect;

    if (!GetWindowRect(hWnd, &rect) || (hWnd == NULL)) {
        return FALSE;
    }

    ZeroMemory(&bi, sizeof(BITMAPINFO));

    LONG lWidth = rect.right - rect.left;
    LONG lHeight = rect.bottom - rect.top;

    bi.bmiHeader.biSize = sizeof(BITMAPINFO);
    bi.bmiHeader.biWidth = lWidth;
    bi.bmiHeader.biHeight = -lHeight;
    bi.bmiHeader.biPlanes = 1;
    bi.bmiHeader.biBitCount = 32;

    hdc = GetDC(hWnd);
    hBitmap = CreateDIBSection(hdc, &bi, DIB_RGB_COLORS, &ptrBitmapPixels, NULL, 0);

    SelectObject(hdcMem, hBitmap);

    *img = cv::Mat(lHeight, lWidth, CV_8UC4, ptrBitmapPixels, 0);

    BitBlt(hdcMem, 0, 0, lWidth, lHeight, hdcSys, 0, 0, SRCCOPY);

    //DeleteObject(hBitmap);
    DeleteDC(hdcMem);
    ReleaseDC(hWnd, hdcSys);
    ReleaseDC(hWnd, hdc);

    return TRUE;
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
    /*...*/
    HotKeyId = GlobalAddAtom(L"DBKGNDSCREENSHOT");
    RegisterHotKey(hWnd, HotKeyId, NULL, VK_F10);
    /*...*/
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
    /*...*/
    case WM_HOTKEY:
        if (wParam == HotKeyId) {
            cv::Mat t;
            HWND MainHWND;
            MainHWND = GetForegroundWindow();

            ScreenShot(&t, MainHWND);
            cv::imshow("1", t);
        }
        break;
    /*...*/
}

甚至是黑色的PrintWindow(至少我們有一個標題欄)

PrintWindow(hWnd, hdcMem, 0);
//BitBlt(hdcMem, 0, 0, lWidth, lHeight, hdcSys, 0, 0, SRCCOPY);

我將此程序發送給了我的朋友(不做任何修改,他的OS = win7 x64),但是他得到了正確的結果。

所以我該怎么做?

GDI是一項非常古老的技術,並逐漸被棄用。 在Windows 10上捕獲桌面的更可靠方法是通過桌面復制API

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