[lazarus] Patch: Comboboxes and various stuff (win32)

[Micha Nelissen]

Hi list,

Attached is a patch which fixes:
1) NewText issue marco and I debugged, about which he wrote to the list. 
Needs more debugging, commented UserData because the field is outside 
the TLMessage structure.
2) Rewritten WM_COMMAND message handling. The type of control implies 
the type of command you can get, not the other way around (as it was). 
The result is that the lcl now properly recieves cbn_dropdown message 
which was first captured by bn_killfocus (a button message).
3) Adjusting the client size for the scrollbars. The client size needs 
to be shrunk to exclude the size of the scrollbars. I have code for this 
in win32callback.inc, but it does not seem to be working as i want. When 
I insert the inverse code for lm_setsize to increase the width with the 
scrollbar size, the scrollbars disappear...strange. So I left this last 
half out.
4) Setting of font to DEFAULT_GUI_FONT. Very simplistic, does not work 
for object inspector, does work for edits and tab controls. It's a 
little bit nicer font. Maybe we need to create a default font ourselves 
that is to be used by the LCL?
5) Implemented SetComboMinDropDownSize. There is a nasty side effect: 
All controls under the combo will be moved down because the combo is 
increased in height. There needs to be code to undo this temporarily 
increase in height for the dropdown.

Regards,

Micha.


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