Disable Button until value is selected in 2 comboboxes

[Maikey81]

I'm trying to disable a button, until two comboboxes contain values.

I can get it to work, but then the buttons flickers at mouse movement.

Anyone an idea how to do this without the button flickering?

This is my code until now:

While 1
$msg = GUIGetMsg()  

If GUICtrlRead($sList) = "" Then
    GUICtrlSetState($doImage, $GUI_DISABLE)
ElseIf  GUICtrlRead($dList) = "" Then
    GUICtrlSetState($doImage, $GUI_DISABLE)
Else
    GUICtrlSetState($doImage, $GUI_ENABLE)
EndIf

Select
    Case $msg = $GUI_EVENT_CLOSE
        GUIDelete()
        ExitLoop
    Case $msg = $doImage
        Image()
Case $msg = $restartbtn
        GUIDelete()
        ExitLoop
EndSelect
WEnd

[GEOSoft]

Set the button and the second combo to disabled when they are created then do a check in your Loop

Case $Msg = $Combo1 Then
    If GUICtrlRead($Msg) <> "" ThenGUICtrlSetState($Combo2, BitOR($GUI_ENABLE, GUI_FOCUS))
Case $Msg = Combo2
    If GUICtrlRead($Msg) <> "" Then GUICtrlSetState($Button, $GUI_ENABLE)

[Maikey81]

That easy, yet never thought about it.

Thank you!

Edited August 3, 2011 by Maikey81

[GEOSoft]

No problem. You may also want to do more checks in case the correct conditions are not met.

For example if the button has already been enabled and someone goes back and selects an empty item in a combo then you will want to disable the button again but only if it is already enabled. To do that use

If BitAnd(GUICtrlGetState($Button, $GUI_ENABLE) = $GUI_ENABLE Then GuiCtrlSetState($Button, GUI_DISABLE)