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Bug 2087

Summary:	Loosing axis OnClick event after calling TeeCreateMetafile
Product:	VCL TeeChart	Reporter:	John Ioannides <johnnious>
Component:	Axis	Assignee:	yeray alonso <yeray>
Status:	RESOLVED FIXED
Severity:	critical	CC:	yeray
Priority:	---
Version:	24.180321
Target Milestone:	---
Hardware:	PC
OS:	Windows
Chart Series:	---	Delphi / C++ Builder RAD IDE Version:	RAD 10.2 Tokyo
Attachments:	Sample application to recreate the issue

Description John Ioannides 2018-09-15 03:03:45 EDT

Created attachment 856 [details]
Sample application to recreate the issue

Attached you can find a sample app, first click on any axis and the onclick event fires, then click on the Click me button and try to click on any axis, the onclick event does not fire

Comment 1 yeray alonso 2018-09-18 04:12:54 EDT

I can't zoom or scroll, so all the events seem to be lost after calling TeeCreateMetafile.

Worked fine in v8.08.
Reproduced in v2012.07,... and v2018.25.

Comment 2 John Ioannides 2018-09-18 04:17:05 EDT

If you add a refresh command for the chart after TeeCreateMetafile it seems to be working

Comment 3 yeray alonso 2018-09-18 04:34:31 EDT

Thanks for noticing the workaround.

Closing the gap... I could reproduce it in v2010.01. So the change should be between v8.08 and v2010.01.

Comment 4 yeray alonso 2022-09-16 09:34:33 EDT

When drawing the chart to a metafile with a different size, the internal properties (ie axis positions) are recalculated.

We introduced a condition in v2010.01 to avoid redrawing the chart if BufferedDisplay was set to true, which is the default value.
Then, since the chart isn't redrawn with it's original size, some of its internal properties are refreshed and methods like axis Clicked don't work as expected.

I'm adding an internal variable to store the value of BufferedDisplay, and I'm setting to to True when drawing a metafile (and restoring it afterwards) to force the chart to be redrawn after creating the metafile.