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T O P I C R E V I E W
PeterPanino	Posted - Mar 07 2024 : 12:04:03 The events TImageEnView.OnZoomIn and TImageEnView.OnZoomOut are not triggered when setting the Zoom programmatically, for example: ImageEnView1.Zoom := ImageEnView1.Zoom + 10; However, they are triggered when setting the Zoom with the mouse wheel. This is shown in the following test project: attach/PeterPanino/20243712229_MouseInteractionsTest_ZoomIssue.zip 76.92 KB Is this a bug?
3 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Mar 08 2024 : 14:34:35 Then by definition, that is not a user activity that is changing zoom, it is your code. You should just change your code to: ImageEnView1.Zoom := ImageEnView1.Zoom + 10; ImageEnView1ZoomIn( nil ); Which is nice and easy, unlike the counter which would be difficult. i.e. if OnZoomIn reacted to code changes, then how would you differentiate between the event occurring due to a code change or a user change? Think about TEdit.OnChange or TCheckbox.OnClick, how do you determine whether the change was by the user or by your code? Nigel Xequte Software www.imageen.com
PeterPanino	Posted - Mar 08 2024 : 10:20:02 As per the definition, the user changes the zoom when clicking a button that executes: ImageEnView1.Zoom := ImageEnView1.Zoom + 10;
xequte	Posted - Mar 07 2024 : 19:48:18 Hi Peter As per the documentation, OnZoomIn/OnZoomOut only occur when the user changes the zoom. Nigel Xequte Software www.imageen.com