To our second example program just before the call to MainLoop, the program will print out the canvas coordinates to the console whenever we click the left mouse button over the canvas window.
放到我们第二个示例程序中的MainLoop调用之前,那么当我们在画布窗口中单击鼠标左键时,画布坐标将显示在屏幕上。
If you need any help, you may just press the button here to ring the call-bell.
如果你需要任何帮助,可以按一下这里的呼叫铃按钮。
If you need any help, you may just press the button here to ring the call-bell.
如果你需要任何帮助,可以按一下这里的呼叫铃按钮。
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