GetActiveWindow handle

[David A. Osborn]

I'm having problems getting the caption on the active window handle. The
active window handle seems to always come back as zero and the caption
blank.

Private Declare Function GetActiveWindow Lib "user32" () As System.IntPtr
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA"
(ByVal hWnd As System.IntPtr, ByVal lpString As System.Text.StringBuilder,
ByVal nMaxCount As Integer) As Integer

Private Function ObtainWindowHandle(ByVal lpstrCaption As String) As Integer
' To store the handle to a window.
Dim hWnd As System.IntPtr

' To store the text of the title bar of the window.
Dim lpString As New System.Text.StringBuilder(255)

'Get The Active Window Handle
hWnd = GetActiveWindow()

'Get THe Caption on the Active Window Handle
GetWindowText(hWnd, lpString, lpString.Capacity)

'Test to see what we got
MsgBox(lpString.ToString)

End Function

[David A. Osborn]

Okay I figured out the problem. I need to use GetForegroundWindow instead
of GetActiveWindow. Could someone explain what the exact difference between
these are?
"David A. Osborn" <do********@hotmail.com> wrote in message
news:Q_6Re.294048$_o.177978@attbi_s71...

I'm having problems getting the caption on the active window handle. The
active window handle seems to always come back as zero and the caption
blank.

Private Declare Function GetActiveWindow Lib "user32" () As System.IntPtr
Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA"
(ByVal hWnd As System.IntPtr, ByVal lpString As System.Text.StringBuilder,
ByVal nMaxCount As Integer) As Integer

Private Function ObtainWindowHandle(ByVal lpstrCaption As String) As
Integer
' To store the handle to a window.
Dim hWnd As System.IntPtr

' To store the text of the title bar of the window.
Dim lpString As New System.Text.StringBuilder(255)

'Get The Active Window Handle
hWnd = GetActiveWindow()

'Get THe Caption on the Active Window Handle
GetWindowText(hWnd, lpString, lpString.Capacity)

'Test to see what we got
MsgBox(lpString.ToString)

End Function

[Bob S]

From the Docs :
The GetActiveWindow function retrieves the window handle to the active
window attached to the calling thread's message queue.
------
GetActiveWindow works only for windows from the calling thread while
GetForegroundWindow works for any window.
-Atul, Sky Software http://www.ssware.com
Shell MegaPack For ActiveX & .Net - Windows Explorer Like Shell UI Controls


"David A. Osborn" <do********@hotmail.com> wrote in message
news:to7Re.294097$_o.288981@attbi_s71...

Okay I figured out the problem. I need to use GetForegroundWindow instead
of GetActiveWindow. Could someone explain what the exact difference
between these are?
"David A. Osborn" <do********@hotmail.com> wrote in message
news:Q_6Re.294048$_o.177978@attbi_s71...

I'm having problems getting the caption on the active window handle. The
active window handle seems to always come back as zero and the caption
blank.

Private Declare Function GetActiveWindow Lib "user32" () As System.IntPtr
Private Declare Function GetWindowText Lib "user32" Alias
"GetWindowTextA" (ByVal hWnd As System.IntPtr, ByVal lpString As
System.Text.StringBuilder, ByVal nMaxCount As Integer) As Integer

Private Function ObtainWindowHandle(ByVal lpstrCaption As String) As
Integer
' To store the handle to a window.
Dim hWnd As System.IntPtr

' To store the text of the title bar of the window.
Dim lpString As New System.Text.StringBuilder(255)

'Get The Active Window Handle
hWnd = GetActiveWindow()

'Get THe Caption on the Active Window Handle
GetWindowText(hWnd, lpString, lpString.Capacity)

'Test to see what we got
MsgBox(lpString.ToString)

End Function