Difference between revisions of "Always on top"
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(How to make a window "Always on top") |
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| − | + | If you want to make a window "Always on top" then all you need is one single call API call: | |
| − | + | Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, _ | |
| + | ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, _ | ||
| + | ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long | ||
| + | |||
| + | This function can be used for a number of things but the item of interest to us is setting the Z-Order | ||
| + | |||
| + | Const HWND_TOPMOST = -1 | ||
| + | SetWindowPos FormName.hWnd, HWND_TOPMOST, 0, 0, 0, 0, &H1 Or &H2 | ||
| + | |||
| + | The &H1 and &H2 translate to SWP_NOSIZE and SWP_NOMOVE which tells SetWindowPos to ignore the size and position paramaters as you only want to change the Z-Order. | ||
| + | |||
| + | To set it back to the normal state, you need to pass HWND_NOTOPMOST | ||
| + | |||
| + | Const HWND_NOTOPMOST = -2 | ||
| + | |||
| + | ==See also== | ||
| + | * [http://www.earlsoft.co.uk/api/call.php?name=SetWindowPos Earlsoft API page] | ||
| + | * [http://msdn.microsoft.com/library/en-us/winui/winui/windowsuserinterface/windowing/windows/windowreference/windowfunctions/setwindowpos.asp MSDN page] | ||
Revision as of 20:57, 10 October 2005
If you want to make a window "Always on top" then all you need is one single call API call:
Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, _ ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, _ ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
This function can be used for a number of things but the item of interest to us is setting the Z-Order
Const HWND_TOPMOST = -1 SetWindowPos FormName.hWnd, HWND_TOPMOST, 0, 0, 0, 0, &H1 Or &H2
The &H1 and &H2 translate to SWP_NOSIZE and SWP_NOMOVE which tells SetWindowPos to ignore the size and position paramaters as you only want to change the Z-Order.
To set it back to the normal state, you need to pass HWND_NOTOPMOST
Const HWND_NOTOPMOST = -2
