How to control TC from other app?

[mia]

Hi there. I wrote small application that provides remote control for other applications. Tried to control TC but -

TC react "strange" if i send "UP" or "DOWN" key. "RETURN" is functional, "F-" keys too. Numeric or alphabetic keys are without reaction.

My code:

tcHWND = FindWindow("TTOTAL_CMD", vbNullString")
res = SetForegroundWindow(tcHWND)
.
.
.
'for UP key
res = PostMessage(tcHWND, WM_KEYDOWN, VK_UP, 0&) 'not work

'for DOWN key
res = PostMessage(tcHWND, WM_KEYDOWN, VK_DOWN, 0&) 'not work

'for RETURN key
res = PostMessage(tcHWND, WM_KEYDOWN, VK_RETURN, 0&) 'thats work

'for SPACE key
res = PostMessage(tcHWND, WM_KEYDOWN, &H20&, 0&) 'not work

What's wrong? Thanks for answers

[SanskritFritz]

I tried the same with Macro Express, it works flawlessly for me. I make some more investigations.

[SanskritFritz]

You have to send the up and down keys to the TMyListBox control, the main window does not propagate the message to its children. Return and F keys are captured on the main form.

[ghisler(Author)]

Try using keybd_event instead of SendMessage.