other4

Set The ShowInTaskBar Property At Runtime

Set The ShowInTaskBar Property At Runtime

Preparations

Add 2 Command Buttons to your form.

Module Code

Public Declare Function GetWindowLong Lib "user32" Alias _
"GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Public Declare Function SetWindowLong Lib "user32" Alias _
"SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, _
ByVal dwNewLong As Long) As Long
Public Declare Function ShowWindow Lib "user32" (ByVal hwnd _
As Long, ByVal nCmdShow As Long) As Long

Public Const SW_HIDE = 0
Public Const SW_SHOW = 5

Public Const GWL_EXSTYLE = (-20)
Public Const WS_EX_TOOLWINDOW = &H80&

Public Sub setShowInTaskbar(Visible As Boolean, hwnd As Long)
Dim L As Long
L = ShowWindow(hwnd, SW_HIDE)
DoEvents
L = SetWindowLong(hwnd, GWL_EXSTYLE, IIf(Visible, -WS_EX_TOOLWINDOW,
WS_EX_TOOLWINDOW))
DoEvents
L = ShowWindow(hwnd, SW_SHOW)
End Sub

Form Code

Private Sub Command1_Click()
Call setShowInTaskbar(True, Me.hwnd)
End Sub

Private Sub Command2_Click()
Call setShowInTaskbar(False, Me.hwnd)
End Sub