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Using SendMessage to minimise another app

Posted on 2002-04-16
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Last Modified: 2008-03-17
Hi all,

I'm trying to co-ordinate the windows of a multi-exe application.

From one exe, I can launch another exe (via Shell(), and work out the hWnd from the PID) and then kill it again using SendMessage(hWnd, WM_CLOSE).

What I want to do is minimise the windows of both exe at the same time (eg, when one is minimised, it tells the other one to minimise as well).

I can't find a suitable WM_ message in the API.
Suggestions anyone?
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Question by:FaffMan
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4 Comments
 
LVL 28

Accepted Solution

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AzraSound earned 100 total points
ID: 6944861
Private Declare Function ShowWindow Lib "user32" Alias "ShowWindow" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long
Private Const SW_MINIMIZE = 6

Call ShowWindow(hWnd, SW_MINIMIZE)
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LVL 5

Expert Comment

by:rkot2000
ID: 6944869
try this :

Declare Function CloseWindow& Lib "user32" (ByVal hwnd As Long)

Minimizes the specified window. The window is not destroyed.


p.s you can shell with minimize option.
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LVL 2

Expert Comment

by:corvanderlinden
ID: 6944872
CloseWindow

VB Declaration

Declare Function CloseWindow& Lib "user32" (ByVal hwnd As Long)

Description

Minimizes the specified window. The window is not destroyed.

Use with VB

Use the WindowState property to minimize VB forms.

Parameter     Type/Description
hwnd     Long—Handle of the window to minimize.

Return Value
Long – Nonzero on success, zero on failure. Sets GetLastError.

Platform

Windows 95, Windows NT, Win16

Comments

This function has no effect on popup and child windows.

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Author Comment

by:FaffMan
ID: 6944907
Nice one! Exactly what I needed.

I assumed (incorrectly...) that there would be a WM_MINIMIZE, like the WM_CLOSE.

Thanks very much to everyone who contributed.
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