我们已经将画布清理干净(将画布的背景色设置为“白色”),并且当鼠标移至画布时,光标变为交叉(在 X11 中有 78种标准的鼠标光标形状,其名称可以在头文件 cursorfont.h 中找到,典型安装时,这个头文件可以在/usr/X11/include/X11/ 目录中找到。)
There are 78 standard mouse cursor shapes in X11, the names of which can be found in the header file cursorfont.h, which in a typical installation can be found in the /usr/X11/include/X11/ directory.
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