void CVideoClientDlg::OnLoadPNG(LPCTSTR Path, CRect m_Rect)
{
ATL::CImage img;
HRESULT ret = img.Load(Path); //要加载的图片名称，包含路径
HBITMAP hbitmap = img.Detach();
//像操作 BMP 图片一样处理图片 ,下面是显示图片的操作
CPaintDC dc(this);// 用于绘制的设备上下文
CRect rect;
GetClientRect(&rect);
CBitmap pngBackground;
BITMAP bitmap;
CDC memdc;
pngBackground.Attach(hbitmap);
memdc.CreateCompatibleDC(&dc);
pngBackground.GetBitmap(&bitmap); //建立绑定关系
CBitmap *pbmpOld=memdc.SelectObject(&pngBackground); //保存原有CDC对象，并选入新CDC对象入DC
dc.SetStretchBltMode(COLORONCOLOR);//防止bmp图片失真
dc.StretchBlt(0,0,rect.Width(),rect.Height(),&memdc,0,0,bitmap.bmWidth,bitmap.bmHeight,SRCCOPY);
memdc.SelectObject(pbmpOld);
//程治谦 2015-1-13 防止内存泄漏
(*pbmpOld).DeleteObject();
DeleteObject(hbitmap);
img.Destroy();
pngBackground.DeleteObject();
memdc.DeleteDC();
}
void CVideoClientDlg::OnPaint()
{
CRect rect;
m_sdlPlayer.GetWindowRect(&rect);
OnLoadPNG(_T(g_szOcxPath+"res/ui-mockup-player-bg1.png"), rect);
//程治谦 2015-1-13 防止内存泄漏
//CStatic* pWnd = (CStatic*)GetDlgItem(IDCSDLPLAYER); // 得到 Picture Control 句柄
ATL::CImage image;
image.Load(_T(g_szOcxPath+"res/ui-mockup-player-inner.png"));
HBITMAP hBmp = image.Detach();
m_sdlPlayer.SetBitmap(hBmp);
//程治谦 2015-1-13 防止内存泄漏
DeleteObject(hBmp);
image.Destroy();
}
void CvvImage::DrawMatToHDC(Mat mat, HDC hDC, RECT rect)
{
ATL::CImage img; //ATL::CImage
int w = mat.cols; //宽
int h = mat.rows; //高
int chinnels = mat.channels();
img.Create(w, h, chinnels << 3);
RGBQUAD* pColorTable = NULL;
int nMaxColors = 256;
pColorTable = new RGBQUAD[nMaxColors];
img.GetColorTable(0, nMaxColors, pColorTable);
for(int i = 0; i < nMaxColors; i++)
{
pColorTable->rgbBlue = (BYTE) i;
pColorTable->rgbGreen = (BYTE) i;
pColorTable->rgbRed = (BYTE) i;
}
img.SetColorTable(0, nMaxColors, pColorTable);
delete[] pColorTable;
int i, j, k;
BYTE *pSource = NULL;
BYTE *pImgData = (BYTE *) img.GetBits();
int step = img.GetPitch();
if(chinnels == 1)
{
for(i = 0; i < h; ++i)
{
pSource = mat.ptr<BYTE> (i);
for(j = 0; j < w; ++j)
{
* (pImgData + i * step + j) = pSource[j];
}
}
}
else if(chinnels == 3)
{
for(i = 0; i < h; ++i)
{
pSource = mat.ptr<BYTE> (i);
for(j = 0; j < w; ++j)
{
for(k = 0; k < 3; ++k)
{
* (pImgData + i * step + j * 3 + k) = pSource[j * 3 + k];
}
}
}
}
else
{
AfxMessageBox(TEXT("仅支持灰度图/3通道彩色图"));
return;
}
SetStretchBltMode(hDC, COLORONCOLOR);
img.StretchBlt(hDC, rect, SRCCOPY);
img.Destroy();
}