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Bug 888 - TChart disappears at design time
Summary: TChart disappears at design time
Status: RESOLVED FIXED
Alias: None
Product: VCL TeeChart
Classification: Unclassified
Component: Chart (show other bugs)
Version: 140220
Hardware: PC Windows
: --- enhancement
Target Milestone: ---
Assignee: Steema Issue Manager
URL: http://www.teechart.net/support/viewt...
Keywords:
Depends on:
Blocks:
 
Reported: 2014-08-18 05:34 EDT by yeray alonso
Modified: 2015-05-26 09:22 EDT (History)
1 user (show)

See Also:
Chart Series: ---
Delphi / C++ Builder RAD IDE Version: RAD XE3, RAD XE4, RAD XE5, RAD XE6

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Description yeray alonso 2014-08-18 05:34:03 EDT 
Create a new simple BCB/Delphi project.
- Drop a TChart and a TComboBox in the Form.
- Drop a TLabel inside the TChart.
- Click on the TComboBox.
- Click on the TChart. The chart disappears.

Reproduced with TeeChart v2014.11 in BCB XE3, BCB XE4 and BCB XE6.
Reproduced with TeeChart v2014.10 in BCB XE5.
Not reproduced with TeeChart v2013.09 in BCB XE5; so seems to appear from v2014.10.

Reproduced also with TeeChart v2014.11 in Delphi XE6.
Not reproduced with TeeChart v2014.11 in Delphi 7; so seems to be reproducible only in "new" IDEs.
Comment 1 david berneda 2015-05-25 04:47:07 EDT 
Note: Problem happens at design-time only.
Comment 2 david berneda 2015-05-25 05:35:00 EDT 
Note: Same test in FireMonkey works fine. It's a VCL-only issue.
Comment 3 david berneda 2015-05-26 09:22:47 EDT 
Fixed. Problem was TCustomTeePanel.GetDeviceContext was not calling the inherited ancestor.

Still there's a problem in old ides (Delphi 7), at design-time only, with charts and TeeOpenGL canvas only, clicking and unclicking them.