#include "GdiPlus.h"
using namespace Gdiplus;
//获取CLassID的函数
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes
ImageCodecInfo* pImageCodecInfo = NULL;
GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure
pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure
GetImageEncoders(num, size, pImageCodecInfo);
for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}
free(pImageCodecInfo);
return -1; // Failure
}
//执行绘制函数
void draw()
{
//初始化GDI+对象
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
{
//创建内存BITMAP
Bitmap bitmap(100,100,PixelFormat24bppRGB);
//Graphics绘图对象
Graphics* graph = Graphics::FromImage(&bitmap);
Pen newPen( Color( 255, 0, 0 ), 3 );
//绘制椭圆
graph->DrawEllipse(&newPen,0,0,60,60);
graph->Save();
CLSID tifClsid;
//获取类ID并保存成图片
GetEncoderClsid(L"image/bmp", &tifClsid);
bitmap.Save(TEXT("abce.bmp"),&tifClsid);
}
//关闭GDI+
GdiplusShutdown(gdiplusToken);
}