C++中怎么把位图输出到窗口

C++中怎么把位图输出到窗口

#include

int PaintBitmap (HWND hwnd ,HBITMAP hBitmap)
{
RECT rect ;
BITMAP bitmap ;

HDC hdcSrc = GetDC (hwnd) ;
HDC hdcBmp = CreateCompatibleDC (hdcSrc) ;

SelectObiect (hdcBmp ,hBitmap) ;

GetClientRect (hwnd ,&rect) ;
GetObject (hBitmap ,sizeof (BITMAP) ,bitmap) ;

Stretchblt (hdcSrc ,0 ,0 ,rect.right - rect.left ,rect.bottom - rect.top ,hdcBmp ,0 ,0 ,bitmap.bmWight ,bitmap.bmHeight) ;

DeleteDC (hdcBmp) ;
ReleaseDC (hwnd ,hdcSrc) ;

return 0 ;
}

原型： int winapi icepub_imgtobmp(char *strimgfilename,char *strbmpfilename,int huiflag) 输入：strimgfilename 各种图像格式文件名 strbmpfilename bmp图像名 huiflag 灰度化标志 输出： typedef int (winapi icepub_imgtobmp)(char *strimgfilename,char *strbmpfilename,int huiflag); icepub_imgtobmp *icepub_imgtobmp = 0; hinstance hdlldrv = loadlibrary("icepubdll.dll"); if(hdlldrv) { icepub_imgtobmp = (icepub_imgtobmp *)getprocaddress(hdlldrv, "icepub_imgtobmp"); } icepub_imgtobmp("a.png","a.bmp",0); icepub_imgtobmp("b.jpg","b.bmp",0); icepub_imgtobmp("c.gif","c.bmp",0); if(hdlldrv) freelibrary(hdlldrv);