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2.4-tutorial_py_mouse_handling.md
这里,我们创建一个简单的程序,在图像的任何位置双击在上面画一个圆。 首先我们创建一个鼠标回调函数,该函数在鼠标事件发生时执行。鼠标事件可以是与鼠标有关的任何内容,比如鼠标左键按下,左键弹起,左键双击等等。所有鼠标事件都给我们提供坐标 ...
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