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Sendmessage Api, Maximize Form

using send message api, im trying to maximize my form....

VB Code:
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Private Const WM_SIZE = &H5 Private Sub Command1_Click()SendMessage Me.hwnd, WM_SIZE, 1, 0End Sub

anyone know why this wont work? i read in the api viewer by microsfot that the wParam for maximize is 1 while using the WM_SIZE wMsg? it wont work....

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