switch(pWnd->GetDlgCtrlID()) { case IDC_BUTTON1: { SetCursor(AfxGetApp()->LoadCursor(IDC_HAND)); GetDlgItem(IDC_TEXT)->ShowWindow(SW_SHOW); GetDlgItem(IDC_TEXT)->SetWindowsText("output the information!"); return TRUE; break; } case ... default://when you leave the hot { GetDlgItem(IDC_TEXT)->ShowWindow(SW_HIDE); SetCursor(AfxGetApp()->LoadCursor(IDC_ARROW)); return TRUE; }
The PtInRegion function determines whether the specified point is inside the specified region BOOL PtInRegion( HRGN hrgn, // handle to region int X, // x-coordinate of point int Y // y-coordinate of point );The SetCursor function establishes the cursor shape. HCURSOR SetCursor( HCURSOR hCursor // handle to cursor );
请问SetCursor原型及使用说明，我不会用啊，汗！
SetCursor The SetCursor function sets the cursor shape. HCURSOR SetCursor( HCURSOR hCursor // handle to cursor ); Parameters hCursor [in] Handle to the cursor. The cursor must have been created by the CreateCursor function or loaded by the LoadCursor or LoadImage function. If this parameter is NULL, the cursor is removed from the screen. Windows 95/98/Me: The width and height of the cursor must be the values returned by the GetSystemMetrics function for SM_CXCURSOR and SM_CYCURSOR. For Windows 95, either the cursor bit depth must match the bit depth of the display or the cursor must be monochrome. However, for Windows 98/Me, if the cursor bit depth does not match the bit depth of the display then the cursor is converted to 4bpp VGA color. Return Values The return value is the handle to the previous cursor, if there was one. If there was no previous cursor, the return value is NULL. Res The cursor is set only if the new cursor is different from the previous cursor; otherwise, the function returns immediately. The cursor is a shared resource. A window should set the cursor shape only when the cursor is in its client area or when the window is capturing mouse input. In systems without a mouse, the window should restore the previous cursor before the cursor leaves the client area or before it relinquishes control to another window. If your application must set the cursor while it is in a window, make sure the class cursor for the specified window's class is set to NULL. If the class cursor is not NULL, the system restores the class cursor each time the mouse is moved. The cursor is not shown on the screen if the internal cursor display count is less than zero. This occurs if the application uses the ShowCursor function to hide the cursor more times than to show the cursor.
public synchronized void setCursor( Cursor cursor ) Parameters cursor One of the constants defined by the Cursor class. Description Set the cursor image to a predefined cursor.
PtInRect(POINT pt)
SetCursor(AfxGetApp()->LoadStandardCursor(IDC_HAND))
BOOL CHotCursorDlg::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)
{
switch(pWnd->GetDlgCtrlID())
{
case IDC_BUTTON1:
{
SetCursor(AfxGetApp()->LoadCursor(IDC_HAND));
GetDlgItem(IDC_TEXT)->ShowWindow(SW_SHOW);
GetDlgItem(IDC_TEXT)->SetWindowsText("output the information!");
return TRUE;
break;
}
case ... default://when you leave the hot
{
GetDlgItem(IDC_TEXT)->ShowWindow(SW_HIDE);
SetCursor(AfxGetApp()->LoadCursor(IDC_ARROW));
return TRUE;
}
}
return CDialog::OnSetCursor(pWnd, nHitTest, message);
}
--------------------------------------*/
BOOL PtInRegion(
HRGN hrgn, // handle to region
int X, // x-coordinate of point
int Y // y-coordinate of point
);The SetCursor function establishes the cursor shape. HCURSOR SetCursor(
HCURSOR hCursor // handle to cursor
);
The SetCursor function sets the cursor shape. HCURSOR SetCursor(
HCURSOR hCursor // handle to cursor
);
Parameters
hCursor
[in] Handle to the cursor. The cursor must have been created by the CreateCursor function or loaded by the LoadCursor or LoadImage function. If this parameter is NULL, the cursor is removed from the screen.
Windows 95/98/Me: The width and height of the cursor must be the values returned by the GetSystemMetrics function for SM_CXCURSOR and SM_CYCURSOR. For Windows 95, either the cursor bit depth must match the bit depth of the display or the cursor must be monochrome. However, for Windows 98/Me, if the cursor bit depth does not match the bit depth of the display then the cursor is converted to 4bpp VGA color. Return Values
The return value is the handle to the previous cursor, if there was one. If there was no previous cursor, the return value is NULL. Res
The cursor is set only if the new cursor is different from the previous cursor; otherwise, the function returns immediately. The cursor is a shared resource. A window should set the cursor shape only when the cursor is in its client area or when the window is capturing mouse input. In systems without a mouse, the window should restore the previous cursor before the cursor leaves the client area or before it relinquishes control to another window. If your application must set the cursor while it is in a window, make sure the class cursor for the specified window's class is set to NULL. If the class cursor is not NULL, the system restores the class cursor each time the mouse is moved. The cursor is not shown on the screen if the internal cursor display count is less than zero. This occurs if the application uses the ShowCursor function to hide the cursor more times than to show the cursor.
Parameters
cursor
One of the constants defined by the Cursor class.
Description
Set the cursor image to a predefined cursor.
OK，解决了，结帖！