我在2000下用SetCapture埔获鼠标,一旦鼠标未于窗口的上部和左部,得到的鼠标位置不准备.
对于这个问题,有几点说明:免得有些人又要来得我分
1.同样的该程序在98下运行正常.
2.我已经用ClientToScreen转换
另一问题:如何隐藏对话框程序的窗口,一运行起来就隐藏,我用ShowWindow(hwnd,SW_HIDE)根本不行
对于这个问题,有几点说明:免得有些人又要来得我分
1.同样的该程序在98下运行正常.
2.我已经用ClientToScreen转换
另一问题:如何隐藏对话框程序的窗口,一运行起来就隐藏,我用ShowWindow(hwnd,SW_HIDE)根本不行
不知道是不是这样子。至于另一个问题。把代码贴出来看看了。
SetCapture有很限制.應該多看看MSDN
The SetCapture function sets the mouse capture to the specified window belonging to the current thread. SetCapture captures mouse input either when the mouse is over the capturing window, or when the mouse button was pressed while the mouse was over the capturing window and the button is still down. 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 to window
);
Parameters
hWnd
[in] Handle to the window in the current thread that is to capture the mouse.
Return Values
The return value is a handle to the window that had previously captured the mouse. If there is no such window, the return value is NULL.
Res
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.
When the mouse is captured, menu hotkeys and other keyboard accelerators do not work.
Windows 95/98/Me: Calling SetCapture causes the window that is losing the mouse capture to receive a WM_CAPTURECHANGED message.
比如你的一个窗口的左上角在屏幕位置的(200,200),那么(300,100)就算窗口的上部,(100,300)就算窗口的左部.不知道你有没有<<Windows程序设计>>的下册,你找到blowup在2000下试试能不能用就知道
this->ShowWindow(SW_HIDE);
SetCapture关键是在你需要的窗口里调用,但从来没有
听说不能获取准确的鼠标位置信息。你只需要在你的调用
SetCapture的窗口里处理WM_MOUSEMOVE消息就可以了
必须做鼠标钩子才能实现你的功能