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LockWindowUpdate The LockWindowUpdate function disables drawing in the given window. Only one window can be locked at a time.
VB4-32,5,6
Declare Function LockWindowUpdate Lib "user32" Alias "LockWindowUpdate" (ByVal hwndLock As Long) As Long |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- hWndLock
Specifies the window in which drawing will be disabled. If this parameter is NULL, drawing in the locked window is enabled. |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero, indicating that an error occurred or another window was already locked. |
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