exzample.txt

BOOL CModbusMasterDemoDlg::DrawBMP(CDC *pDC, int iLogPixelX, int iLogPixelY, CString strFileName)
{
CDC MemDC; // 内存设备环境指针，在视的整个存在过程都将存在
CBitmap Bitmap; 
CBitmap *pOldBmp = NULL;
CRect Source, Dest; // 记录源位图尺寸和最终显示尺寸
BITMAP bm;
int image_width = 0, image_height = 0;
if (MemDC.GetSafeHdc() == NULL)
{
HBITMAP hbitmap = (HBITMAP)LoadImage(0, strFileName, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADFROMFILE);
Bitmap.Attach(hbitmap);
MemDC.CreateCompatibleDC(pDC);
Bitmap.GetObject(sizeof(bm), &bm);
pOldBmp = MemDC.SelectObject(&Bitmap);
Source.top = 0;
Source.left = 0;
Source.right = bm.bmWidth;
Source.bottom = bm.bmHeight;
Dest = Source;
}
else
{
update(_T("获取打印SafeHdc失败,打印失败"));
OnSendHmi("", "", -1, -1, "8", 0, HMI_ERROR);
return FALSE;
}
pDC->DPtoLP(&Dest);
int xDst = 0, yDst = 0, cxDst = 0, cyDst = 0;