廢話
用過不知多少開源圖像庫，其實似乎無例外的都是幾個圖像解碼庫zlib、libpng、libjpeg的封裝。夠了，基本可以解決所有圖像問題。GdiPlus這種要死不活的東西，拜微軟所賜，偶今天才有空去瞅瞅。玩一下吧，不想為了寫幾行代碼去整個開源的解碼庫。別了，zlib；別了，libpng；別了，skia；別了，freeimage；別了，cximage；別了，devil。別了，opensource。
source
MSDN About GDI+
http://msdn.microsoft.com/en-us/library/ms533797(v=VS.85).aspx
Getting Started
http://msdn.microsoft.com/en-us/library/ms533807(v=VS.85).aspx
Image Class
http://msdn.microsoft.com/en-us/library/ms534462
Use
Note the call to GdiplusStartup in the WinMain function. The first parameter of the GdiplusStartup function is the address of a ULONG_PTR. GdiplusStartup fills that variable with a token that is later passed to the GdiplusShutdown function. The second parameter of the GdiplusStartup function is the address of a GdiplusStartupInput structure. The preceding code relies on the default GdiplusStartupInput constructor to set the structure members appropriately.
1.引用
#include <gdiplus.h>
using namespace Gdiplus;
#pragma comment (lib,"Gdiplus.lib")
2.初始化與銷毀
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
// Initialize GDI+.
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);// Shutdown
GdiplusShutdown(gdiplusToken);
3.畫
VOID OnPaint(HDC hdc)
{
Graphics graphics(hdc);
Pen pen(Color(255, 0, 0, 255));
graphics.DrawLine(&pen, 0, 0, 200, 100);
}