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Is a certain form open?

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Submitted on: 1/22/2015 6:21:00 AM
By: Matthew Roberts (from psc cd)  
Level: Beginner
User Rating: By 3 Users
Compatibility: VB 4.0 (32-bit), VB 5.0, VB 6.0
Views: 400
 
     Simple API call that tells whether or not a particular form is open. Useful for managing popup forms or a series of forms. Sample usage: If FormIsOpen("Color Picker") Then ' ....Do Something Here Else ' ...Do Something Else Here... End If
 

Windows API/Global Declarations:

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'**************************************
'Windows API/Global Declarations for :Is a certain form open?
'**************************************
Private Declare Function FindWindow Lib "user32" Alias _
 "FindWindowA" (ByVal lpClassName As String, ByVal _
 lpWindowName As String) As Long
code:
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'**************************************
' Name: Is a certain form open?
' Description:Simple API call that tells whether or not a particular form is open. Useful for managing popup forms or a series of forms.
Sample usage:
If FormIsOpen("Color Picker") Then
' ....Do Something Here
Else
' ...Do Something Else Here...
End If
' By: Matthew Roberts (from psc cd)
'
' Inputs:FormName
'
' Returns:Boolean. True=Form is open.
'
' Assumes:Goes by form title, so multiple instances of a form can be used as long as their titles are different. Also works with other applications...any window in fact, so it is not limited to your VB forms.
'**************************************

Public Function FormIsOpen(FormCaption) As Boolean
FormIsOpen = FindWindow(vbNullString, FormCaption)
End Function


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