Question

I need to perform the same task as WindowsKey + M through code, ie. minimize all open windows. This must be done through the Win32 API, not .Net.

I tried the following in FreeBasic, but nothing happens:

Dim hWndConsole As HWND
'Shell_TrayWnd = class name of taskbar
Dim WindowName as String = "Shell_TrayWnd"

hWndConsole = FindWindow(0, strptr(WindowName))
ShowWindow(hWndConsole, SW_MINIMIZE) 'outta my sight

Does someone know how to do this?

Thank you.

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Edit: Here’s the working solution:

#include "Windows.bi"

Dim hWndConsole As HWND
'Shell_TrayWnd = class name of taskbar
Dim WindowName as String = "Shell_TrayWnd"
Dim res as LRESULT
CONST minall = 419

hWndConsole = FindWindow( "Shell_TrayWnd",null)

res = postMessage(hWndConsole, WM_COMMAND,  minall, null )

Answer 1

This seems like a bit of a hack to me, but the following does seem to accomplish what you are looking for (in C):

HANDLE hwnd = FindWindow( "Shell_TrayWnd", NULL );
LRESULT res = SendMessage( hwnd, WM_COMMAND, (WPARAM)419, 0 );