基于VS2010的GDI+程序，实现随机色清空背景、画笔使用、纯色画刷、图案画刷、线性渐变画刷、路径渐变画刷、纹理画刷、7种几何图形、文字-字体与布局输出、图像操作。(The VS2010 GDI+ program based on random color clear background, using solid color brush, brush, brush, brush, pattern of linear gradient path gradient brush, brush, 7