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Launching Task Manager from a User Application, shall I launch tskmgr.exe / taskman.exe or use keybd_event API to simulate a Ctrl-Alt-Del key press?

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SeaFarer

Extremely Active Member

Group: Members
Posts: 1751
Member No.: 1464
Joined: 2-September 05

Hi,

Is there a function or an undocumented method of opening Task Manager from a user application?

For example:

You would have a button or menu item that could be selected by mouse click versus having to actually press the Ctr-Alt-Del key combination manually.

Incidentially a search of the board turned up nothing on this topic.


samael
Typo-lord Group: Moderators Posts: 404 Member No.: 5187 Joined: 10-June 07	Why not simply launch "tskmgr.exe", located inside your system directory?


SeaFarer
Extremely Active Member Group: Members Posts: 1751 Member No.: 1464 Joined: 2-September 05	For the reason... that file does not exist on win98se. Taskman.exe is used, but that is not what I want to do. Should I rephrase the question? Perhaps there is a way to simulate a Ctrl-Alt-Del key press?

samael

Typo-lord

Group: Moderators
Posts: 404
Member No.: 5187
Joined: 10-June 07

You can try the keybd_event API, but this does not get the job done under NT-based systems for the particular combination [ALT+CTRL+DEL].

Apart from the fact that this combination invokes different stuff (according to your PC configuration) on NT-based systems, even if it was invoking TaskManager on the first place, the code posted below won't work....

Dont know if this works under windows 98 though...

The technique works for other key combinations, such as [ALT+TAB] for instance...

CODE

;/////////////////////////////////////////////////////////////////////////////
;// Simulate [ALT+CTRL+DEL] combination
; Won't work on NT based systems ????
;///////////////////////////////////////////////////////////////////////////
invoke keybd_event, VK_CONTROL, 0E01Dh, KEYEVENTF_EXTENDEDKEY, NULL; Simulate CONTROL key Press
invoke keybd_event, VK_MENU , 0E038h, KEYEVENTF_EXTENDEDKEY, NULL; Simulate ALT key Press
invoke keybd_event, VK_DELETE, 0E053h, KEYEVENTF_EXTENDEDKEY, NULL; Simulate DELETE key Press

invoke keybd_event, VK_CONTROL, 0E01Dh, �KEYEVENTF_EXTENDEDKEY OR KEYEVENTF_KEYUP , 0; Simulate CONTROL key release
invoke keybd_event, VK_MENU , 0E038h, �KEYEVENTF_EXTENDEDKEY OR KEYEVENTF_KEYUP , 0; Simulate ALT key release
invoke keybd_event, VK_DELETE, 0E053h,KEYEVENTF_EXTENDEDKEY OR KEYEVENTF_KEYUP , 0; Simulate DELETE key release

;/////////////////////////////////////////////////////////////////////////////
;// Simulate [ALT+TAB] combination
; Works OK ???
;///////////////////////////////////////////////////////////////////////////

invoke keybd_event, VK_MENU , 0E038h, KEYEVENTF_EXTENDEDKEY, NULL; Simulate ALT key Press
invoke keybd_event, VK_TAB, 0Fh, NULL, NULL; Simulate TAB key Press
Invoke Sleep,5000; Show the dialog for 5 seconds
invoke keybd_event, VK_MENU , 0E038h, �KEYEVENTF_EXTENDEDKEY OR KEYEVENTF_KEYUP , 0; Simulate ALT key release
invoke keybd_event, VK_TAB, 0Fh, �KEYEVENTF_KEYUP , 0; Simulate TAB key release


SeaFarer
Extremely Active Member Group: Members Posts: 1751 Member No.: 1464 Joined: 2-September 05	Thanks Sam. I was trying Keybd_event, but not with the parameters you chose. Let me try your method and respond within the next day. At the moment I'm wrapping up the Free Disk Space example I've been building since yesterday. I actually have it working now, minus a good dialog.

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