I have a class derived from CTreeCtrl. In some circumstances the user might be editing it and I would like to program开发者_运维百科matically cancel the edit which is currently in progress.
How do I do this? There doesn't seem to be any appropriate function of the class which would do that, or if I have to send it some message it's not immediately obvious to me what the message is that I should send.
I believe this is possible by sending the tree control the TVM_ENDEDITLABELNOW message, or by using the TreeView_EndEditLabelNow macro.
To determine if the user is editing a label, you have to wait for the folling messages:
TVN_BEGINLABELEDIT
and TVN_ENDLABELEDIT
.
To cancel, just set the focus to another node.
So I've eventually discovered that I can fake an Escape button press to the edit control:
tree.GetEditControl()->SendMessage(WM_KEYDOWN, VK_ESCAPE, 1);
This seems to cancel editing appropriately.
精彩评论