位图的显示

BITMAPINFO *m_pBMI1;

m_pBMI1= new BITMAPINFO;//自定义的BMP文件信息结构，用于后面的图像显示

ZeroMemory(m_pBMI1, sizeof(BITMAPINFO)); 

m_pBMI1->bmiHeader.biBitCount=24;

m_pBMI1->bmiHeader.biClrImportant=0;

m_pBMI1->bmiHeader.biClrUsed=0;

m_pBMI1->bmiHeader.biCompression=BI_RGB;

m_pBMI1->bmiHeader.biHeight=iHeight;

m_pBMI1->bmiHeader.biPlanes=1;

m_pBMI1->bmiHeader.biSize=40;

m_pBMI1->bmiHeader.biSizeImage=WIDTHBYTES(iWidth*8)*iHeight*3;

m_pBMI1->bmiHeader.biWidth=iWidth;

m_pBMI1->bmiHeader.biXPelsPerMeter=0;

m_pBMI1->bmiHeader.biYPelsPerMeter=0;

CRect rect;

CWnd *pWnd=GetDlgItem(IDC_STATIC_VIDEO);

pWnd->GetClientRect(&rect);

int rw=rect.right-rect.left;         

int rh=rect.bottom-rect.top;

CDC *pdc=GetDlgItem(IDC_STATIC_VIDEO)->GetDC();

HDC hdc=pdc->GetSafeHdc();

BYTE *pData1=NULL;

HANDLE hdib=(HANDLE)::GlobalAlloc(GMEM_FIXED,WIDTHBYTES(iWidth*8)*3*iHeight);

pData1=(BYTE*)::GlobalLock((HGLOBAL)hdib);

///m_recvBuf中的数据拷贝到pData1中，考虑到对齐

int nstride;

nstride=WIDTHBYTES(iWidth*8)*3;

for(int i=0;i<iHeight;i++){

for(int j=0;j<iWidth;j++){

                        //m_recvBuf为RGB数据

*(pData1+i*nstride+j*3)=*(m_recvBuf+i*iWidth*3+j*3);

*(pData1+i*nstride+j*3+1)=*(m_recvBuf+i*iWidth*3+j*3+1);

*(pData1+i*nstride+j*3+2)=*(m_recvBuf+i*iWidth*3+j*3+2);

}

}

pdc->SetBkMode(TRANSPARENT);

//显示真彩色图像

StretchDIBits(hdc,0,0,rw,rh,0,0,iWidth,iHeight,pData1,m_pBMI1,DIB_RGB_COLORS,SRCCOPY);

GlobalUnlock((HGLOBAL)hdib);

ReleaseDC(pdc);

delete pData1;

      delete m_pBMI1;

//