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When I call the AddItem method to add a thumbnail, although the ItemAdd event is raised and the function returns “TRUE”, the thumbnail does not appear on screen. What could I been making wrong?

April 26, 2017additem event function method RAISED returns thumbnail

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Posted

When I call the AddItem method to add a thumbnail, although the ItemAdd event is raised and the function returns “TRUE”, the thumbnail does not appear on screen. What could I been making wrong?

1 Answer

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Posted

Just call the control’s DrawItems method when you wish the manually added items to be displayed. This is by design, in order to allow the user to control if the added items will be displayed as soon as they are added, by calling the DrawItem method immediately after the AddItem method returns, or if they will be displayed once after all items have been successfully added.