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Osiris 
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Joined: 18 June 2007 Status: Offline Points: 29 |
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 Topic: SingleExpandPosted: 05 September 2007 at 8:00am |
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Hi,
how can I get notified if the user expands a category in my own property grid class derived from CXTPPropertyGrid? I want to allow only one category to be opened at a time. If a category is expanded, all other categories shall be collapsed automaticly. Thanks in advance Stefan |
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mgampi
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Joined: 14 July 2003 Status: Offline Points: 1201 |
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Posted: 05 September 2007 at 9:04am |
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Hi,
take a look at the XTP_PGN_ITEMEXPANDCHANGED action of the XTPWM_PROPERTYGRID_NOTIFY message.
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Martin Product: Xtreme Toolkit v 22.1.0, new Projects v 24.0.0 Platform: Windows 10 v 22H2 (64bit) Language: VC++ 2022 |
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Osiris
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Posted: 05 September 2007 at 10:48am |
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Hi Martin,
thank you for your fast response. Is it possible to get the XTPWM_PROPERTYGRID_NOTIFY message in a derived property grid class via reflection? How would the message map entry and the message handler function signature have to look like? (I did not found any clues in the documnetation.) Thanks (again) Stefan |
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mgampi
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Posted: 05 September 2007 at 1:47pm |
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Hi Stefan,
in this case I would suggest, you derive from CXTPPropertyGridItem and replace the OnLButtonDown() handler. Then each category item should instantiate your derived item type. To ease this, first copy the source from the original CXTPPropertyGridItem::OnLButtonDown and change it as necessary - check all other category items whether they should be expanded or collapsed...
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Martin Product: Xtreme Toolkit v 22.1.0, new Projects v 24.0.0 Platform: Windows 10 v 22H2 (64bit) Language: VC++ 2022 |
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Osiris
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Posted: 06 September 2007 at 7:34am |
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Hi Martin,
I've found an easier solution. Just overwrite the SendNotifyMessage method in the CXTPPropertyGrid derived class and check the wparam for XTP_PGN_ITEMEXPANDCHANGED. Thanks for your help anyway Stefan |
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