Problem with SendMessage API call

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Jim Brown

Mmm .. I tried it with QueryObject() and it still fails:

Const LB_GETCOUNT=$18b

width=400 ; Window client width 
height=300 ; Window client height 
gap=20 ; Gap between gadgets 
hwin=CreateWindow("Testing",100,50,width,height,0,33) 
lbox=CreateListBox(gap,gap,width-gap*2,height-gap*2,hwin) 

For d=1 To 5
	AddGadgetItem lbox,"Line "+d
Next

i=SendMessage(QueryObject(lbox,1),LB_GETCOUNT,0,0)
AddGadgetItem lbox,"Count = "+Str$(i)

WaitEvent
End

For more listbox information have you looked at MSDN Library - ListBoxes ?