在对话框中显示图片

来源：互联网发布：linux系统下安装软件编辑：程序博客网时间：2024/04/24 08:23

1.头文件：
#include <INITGUID.h>
#include <imaging.h>

2.给对话框加上OnPaint() 方法，代码为：
IImagingFactory *pImgFactory = NULL;
IImage *pImage = NULL;
CoInitializeEx(NULL, COINIT_MULTITHREADED);
HBITMAP hResult = 0;
if (SUCCEEDED(CoCreateInstance (CLSID_ImagingFactory,
  NULL,
  CLSCTX_INPROC_SERVER,
  IID_IImagingFactory,
  (void **)&pImgFactory)))
{
if (SUCCEEDED(pImgFactory->CreateImageFromFile(L"//yes.jpg", &pImage)))
{
  //CWindowDC dc(0);
  CDC dcBitmap;
       dcBitmap.CreateCompatibleDC(&dc);
hResult = CreateCompatibleBitmap(dc.GetSafeHdc(), width, heigth);
if (hResult) {
  HGDIOBJ hOldBitmap = dcBitmap.SelectObject(hResult);
    //pImage->GetThumbnail(0,0,&pImage);
    pImage->Draw(dc.GetSafeHdc(), CRect(0, 0, width, heigth), NULL);
    dcBitmap.SelectObject(hOldBitmap);
   }
   pImage->Release();
  }
  pImgFactory->Release();
}
CoUninitialize();
3.在CRect(0, 0, width, heigth)中设置图片的显示位置和大小
   0,0为图片的左上点的坐标，width, heigth为右下点坐标