Added: Apr 29, 2002
Snippet uploaded by: snippet
Written By: unknown
Demo: Sorry, no demo
There are times when you might need to know if a window is a DOS window and all you have is the window handle. To find out if a window is a DOS window you only need to do the following two things: Get the task handle for your window handle with the "GetWindowTask" API call. Test this "IsWinOldApTask" API call for true. The following declare statement outlines the IsDOSWindow API call: Declare Function IsWinOldApTask% Lib "kernel" Alias "#158" (ByVal hTask%) In the "kernel" (ex: KRNL386.EXE) file, the exported function, "158", points to this routine. Although undocumented, this API call was supported internally in Windows 3.0 and continues to thrive in the 3.1 and 3.11 versions. It probably won't be around for future Windows versions as DOS seems to be on the way out.
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Declare Function IsWinOldApTask% Lib "kernel" Alias "#158" (ByVal hTask%)
Declare Function GetWindowTask% Lib "user" (ByVal hWnd%)
Declare Function FindWindow% Lib "user" (ByVal ClassName$, ByVal lpWindowName As Any)
Function IsDOSWindow (iHandle As Integer) As Long
IsDOSWindow = IsWinOldApTask(GetWindowTask(iHandle))
Dim iInstance As Integer
Dim iFoundWindow As Integer
'launch a DOS window
iInstance = Shell("COMMAND.COM", 1)
'Get the window handle
iFoundWindow = FindWindow("tty", 0&)
If IsDOSWindow(iFoundWindow) = True Then
MsgBox "YES, it IS a DOS window"
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