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
OwnerDatais enabled (as mentioned in the article linked in the question).So you have to set
OwnerDrawtoTrue(in addition toOwnerData, the two are independed flags!) and draw the CheckBoxes yourself in theOnCustomDrawItemevent.Update:
It seems that this is not entirely true, the
OnCustomDrawItemevent 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 = FalseandCheckBoxes = 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.