windows gdi和图像解析示例，是一个图像对比工具，可用作"大家来找茬"游戏外挂，类似qq截图的方法选择源图像区域，软件会自动锁定右边的比较区域，并显示左右区域不同处-a example for window GDI operation, a image compare tool, can be used to compare 2 picture and find difference, when you choose the source image area, the program will auto choose the compare area, it can show the difference by click a hotkey.