How to use SetParent? [Archive] - Xtreme Visual Basic Talk

JDT

07-09-2001, 04:04 PM

Here is an example that I copied out of the API guide. You can get the API Guide at <A HREF = "www.AllApi.Net">AllApi.Net</A>

<pre>Option Explicit

Private Declare Function FindWindow Lib "user32" _
Alias "FindWindowA" ( _
ByVal lpClassName As Long, _
ByVal lpWindowName As Long) As Long

Private Declare Function GetParent Lib "user32" (ByVal hwnd As Long) As Long

Private Declare Function SetParent Lib "user32" ( _
ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long

Private Declare Function GetWindowThreadProcessId Lib "user32" ( _
ByVal hwnd As Long, lpdwProcessId As Long) As Long

Private Declare Function GetWindow Lib "user32" ( _
ByVal hwnd As Long, ByVal wCmd As Long) As Long

Private Declare Function LockWindowUpdate Lib "user32" ( _
ByVal hwndLock As Long) As Long

Private Declare Function GetDesktopWindow Lib "user32" () As Long

Private Declare Function DestroyWindow Lib "user32" (ByVal hwnd As Long) As Long

Private Declare Function TerminateProcess Lib "kernel32" ( _
ByVal hProcess As Long, ByVal uExitCode As Long) As Long

Private Declare Function GetCurrentProcess Lib "kernel32" () As Long

Private Declare Function Putfocus Lib "user32" _
Alias "SetFocus" (ByVal hwnd As Long) As Long

Const GW_HWNDNEXT = 2
Dim mWnd As Long

Function InstanceToWnd(ByVal target_pid As Long) As Long
Dim test_hwnd As Long, test_pid As Long, test_thread_id As Long
'Find the first window
test_hwnd = FindWindow(ByVal 0&, ByVal 0&)
Do While test_hwnd <> 0
'Check if the window isn't a child
If GetParent(test_hwnd) = 0 Then
'Get the window's thread
test_thread_id = GetWindowThreadProcessId(test_hwnd, test_pid)
If test_pid = target_pid Then
InstanceToWnd = test_hwnd
Exit Do
End If
End If
'retrieve the next window
test_hwnd = GetWindow(test_hwnd, GW_HWNDNEXT)
Loop
End Function
Private Sub Form_Load()
'KPD-Team 1999
'URL: http://www.allapi.net/
'E-Mail: KPDTeam@Allapi.net
Dim Pid As Long
'Lock the window update
LockWindowUpdate GetDesktopWindow
'Execute notepad.Exe
Pid = Shell("c:\windows\notepad.exe", vbNormalFocus)
If Pid = 0 Then MsgBox "Error starting the app"
'retrieve the handle of the window
mWnd = InstanceToWnd(Pid)
'Set the notepad's parent
SetParent mWnd, Me.hwnd
'Put the focus on notepad
Putfocus mWnd
'Unlock windowupdate
LockWindowUpdate False
End Sub
Private Sub Form_Unload(Cancel As Integer)
'Unload notepad
DestroyWindow mWnd
'End this program
TerminateProcess GetCurrentProcess, 0
End Sub
</pre>

JDT