Minigui学习---鼠标获取和坐标在不同区域转换

最新推荐文章于 2023-04-23 09:41:01 发布

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最新推荐文章于 2023-04-23 09:41:01 发布 · 1.4k 阅读

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本文介绍了Minigui中如何设置鼠标捕获，并详细讲解了屏幕坐标、窗口坐标及客户区坐标的转换，包括SetCapture、ReleaseCapture函数的使用，以及ClientToScreen、ScreenToClient、WindowToScreen、ScreenToWindow四个坐标转换函数的实例演示。

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(1)设置鼠标的所在的Wnd：

函数定义（window.h文件中定义的）：

MG_EXPORT HWND GUIAPI GetCapture(void); //Retrives the handle to the window (if any) that has captured the mouse.return The handle to the window that has captured the mouse, 0 for no window captures the mouse.

Only one window at a time can capture the mouse; this window receives mouse input whether or not the cursor is within its borders.

MG_EXPORT HWND GUIAPI SetCapture(HWND hWnd);//Sets the mouse capture to the specified window. param hWnd The handle to the window.return The old capture window. Once a window has captured the mouse, all mouse input is directed to that window, regardless of whether the cursor is within the borders of that window. Only one window at a time can capture the mouse.

MG_EXPORT void GUIAPI ReleaseCapture(void); //Releases the mouse capture from a window and restores norma