Indicates if the specified dialog is visible in the application.
[Visual Basic 6.0] Function IsDialogVisible(
ByVal dialogID As Long _
) As Boolean
[Visual Basic .NET] Public Function IsDialogVisible ( _ ByVal dialogID As Integer _ ) As Boolean
[C#] public bool IsDialogVisible ( int dialogID );
Refer to the esriMxDlgIDs Constants help topic for a listing of the dialog ids in ArcMap.
Refer to the esriGxDlgIDs Constants help topic for a listing of the dialog ids in ArcCatalog.
IApplication Interface | esriMxDlgIDs Constants | esriGxDlgIDs Constants