I am learning to make virtual mode listview. So far my problem is I can not use checkbox in the listview. I already read a link from http://delphi-kb.blogspot.com/2011/02/draw-checkboxes-in-virtual-mode.html but I don't see any checkbox. Any idea?
Using checkbox in virtual mode listview
2.5k Views Asked by Charles Sungkono At
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Apparently you have to draw the CheckBoxes yourself when
OwnerData
is enabled (as mentioned in the article linked in the question).So you have to set
OwnerDraw
toTrue
(in addition toOwnerData
, the two are independed flags!) and draw the CheckBoxes yourself in theOnCustomDrawItem
event.Update:
It seems that this is not entirely true, the
OnCustomDrawItem
event is also fired in the caseOwnerDraw = False
.http://docwiki.embarcadero.com/VCL/XE2/en/ComCtrls.TListView.OnCustomDrawItem
Update 2:
The code linked in the question only works when
OwnerDraw = False
andCheckBoxes = True
.Otherwise the VCL doesn't reserve space on the left to draw CheckBoxes.
BTW: You might be better of using a more advanced component like TVirtualTreeView from Mike Lischke.