Customising CXTPToolBar with combo

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   I have a CXTPToolBar that contains a combo box.  In OnCreateControl() I create and add the CXTPControlComboBox object for the toolbar.
This all works fine but if you customise the toolbar by clicking on the 'toolbar options' button on the end of the toolbar and deselect the combo control, and then later add it back in again, you get an exception when you use it.
The OnCreateControl() function does not appear to get called a second time when you restore the combo but the control does not seem to be the original one - but the list box still contains all the items added to the original!!
Can anyone tell me how I should be handling this situation?  Thanks.

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brianh Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 30 April 2004 Location: United Kingdom Status: Offline Points: 83	Post Options Post Reply Quote brianh Report Post Thanks(0) Quote Reply Topic: Customising CXTPToolBar with combo Posted: 20 July 2004 at 11:25am
	I have a CXTPToolBar that contains a combo box. In OnCreateControl() I create and add the CXTPControlComboBox object for the toolbar. This all works fine but if you customise the toolbar by clicking on the 'toolbar options' button on the end of the toolbar and deselect the combo control, and then later add it back in again, you get an exception when you use it. The OnCreateControl() function does not appear to get called a second time when you restore the combo but the control does not seem to be the original one - but the list box still contains all the items added to the original!! Can anyone tell me how I should be handling this situation? Thanks.

SuperMario Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 14 February 2004 Status: Offline Points: 18057	Post Options Post Reply Quote SuperMario Report Post Thanks(0) Quote Reply Posted: 20 July 2004 at 11:38am
	Take a look at the DynamicPopups sample and possible even the CommonControls sample. I believe the DynamicPopups sample does what you are describing.

brianh Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 30 April 2004 Location: United Kingdom Status: Offline Points: 83	Post Options Post Reply Quote brianh Report Post Thanks(0) Quote Reply Posted: 21 July 2004 at 3:42am
	Yes these samples do add controls to the toolbar but in my case I store a pointer to the control which becomes invalid after hiding/showing the control on the toolbar. If I just use FindControl() to get the control this works okay after hiding/showing it but the data that was added to the original control with SetItemData() is missing, and it no longer has a current selection (never mind the one it had when it was hidden) which makes no sense for my application. What I need is a notification when the control is destroyed so I can clean up if necessary (I don't store pointers with SetItemData() but I might in the future) and a notification when it is redisplayed so I can initialize it properly. Are there any such notifications? Thanks.