VC++裁剪位图示例源代码，不是用鼠标拖动裁剪那种，是在程序里设置形式和参数，直接运行程序就裁剪了，不知对大家有用不，先发上来学习学习。-Crop bitmap VC++ source code examples, not the kind with the mouse to drag cutting, forms and parameters are set in the program, run the program directly on the crop, and I wonder i