wrote in message
news:1192145365.585790.108750@e9g2000prf.googlegro ups.com...
> in the past it worked well to send from own program a simulated Key-
> press of the Cursor-up key Taste to another program, that in the other
> prgram the selection of an item in a listfield moves one step up/down:
>
> sendmessage(wnd,WM_KEYDOWN,VK_UP,0);
> sendmessage(wnd,WM_KEYUP,VK_up,0);
>
> Now its not working anymore somehow (software-update), albeit e.g. a
> simulated double-click still works by using
>
> sendmessage(wnd,WM_lBUTTONDBLCLK,0,0);

Are you sure this worked in a previous version?
It seems you mistake VK_UP for a mouse button click -- which is *not*
WM_LBUTTONUP, because that is a system message. The mouse buttons have their
own VK_ values. Either use WM_KEYDOWN/UP with the VK_ values for the mouse
buttons, or send WM_LBUTTONDOWN/UP messages.

[Jongware]

> Are you sure this worked in a previous version?
> It seems you mistake VK_UP for a mouse button click -- which is *not*
> WM_LBUTTONUP, because that is a system message. The mouse buttons have their
> own VK_ values. Either use WM_KEYDOWN/UP with the VK_ values for the mouse
> buttons, or send WM_LBUTTONDOWN/UP messages.

Hi,

yes you are right, two different things. On the one hand key-press
message, on the other hand mouseclick-message.
However, in the past it worked for both, for the key by using

sendmessage(wnd,WM_KEYDOWN,VK_UP,0);
sendmessage(wnd,WM_KEYUP,VK_UP,0);

If the user is manually in the list of the targeted application the
item selector respond to pressing the key cursor-up or cursor-down.
However, actually you can simulate it by sendmessage as above, but it
does not work anymore. Are there other options to try ?

Sending 0 as last param still sufficient?

Thanks a lot.