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海鸥软件 2018-03-08
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用timer控件，检测区域，超过了就提示，就是你所谓的程序外那个边界线区域
神马都能聊 2018-03-08
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ToolTip属性设置一下就可以了。
赵4老师 2018-01-15
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SetCapture
The SetCapture function sets the mouse capture to the specified window belonging to the current thread. 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.
If the mouse cursor is over a window created by another thread, the system will direct mouse input to the specified window only if a mouse button is down.
HWND SetCapture(
HWND hWnd // handle of window to receive mouse capture
);
Parameters
hWnd
Handle to the window in the current thread that is to capture the mouse.
Return Values
The return value is the handle of the window that had previously captured the mouse. If there is no such window, the return value is NULL.
Remarks
Only the foreground window can capture the mouse. When a background window attempts to do so, the window receives messages only for mouse events that occur when the cursor hot spot is within the visible portion of the window. Also, even if the foreground window has captured the mouse, the user can still click another window, bringing it to the foreground.
When the window no longer requires all mouse input, the thread that created the window should call the ReleaseCapture function to release the mouse.
This function cannot be used to capture mouse input meant for another process.
Windows 95: Calling SetCapture causes the window that is losing the mouse capture to receive a WM_CAPTURECHANGED message.
QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Import Library: Use user32.lib.
See Also
Mouse Input Overview, Mouse Input Functions, GetCapture, ReleaseCapture, WM_CAPTURECHANGED
舉杯邀明月 2018-01-14
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要不，你就用“定时器”功能，不断的检测（并且记录）鼠标指针位置，
如果保持了一定的时间“位置不变”（或变化在限定区域范围内），就可认为“悬停”了。
舉杯邀明月 2018-01-14
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什么叫做“程序外”？？？
你“自创”的这一个名词，有谁能明白你的意思的！
你“自创”的这一个名词，有谁能明白你的意思的！
