Steema Issues Database

Note: This database is for bugs and wishes only. For technical support help, if you are a customer please visit our online forums;
otherwise you can use StackOverflow.
Before using this bug-tracker we recommend a look at this document, Steema Bug Fixing Policy.



Bug 1668

Summary: "Control has no parent window" exception when using TMarksTipTool in a TSubChartTool
Product: VCL TeeChart Reporter: yeray alonso <yeray>
Component: ToolsAssignee: Steema Issue Manager <issuemanager>
Status: RESOLVED FIXED    
Severity: enhancement CC: algonzalez74, anthony.moyer, david
Priority: ---    
Version: 20.170306   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
URL: http://www.teechart.net/support/viewtopic.php?f=3&t=16309
Chart Series: --- Delphi / C++ Builder RAD IDE Version:
Attachments: test project

Description yeray alonso 2016-10-28 05:50:33 EDT 
Created attachment 659 [details]
test project

See the project attached. If you move the mouse over any point in the subchart you get the exception:

"Project Project3.exe raised exception class EInvalidOperation with message 'Control 'MySubChart' has no parent window'."
Comment 1 david berneda 2016-11-13 03:45:47 EST 
Note: Subcharts are not real living controls inside a chart, but are painted and redirected mouse events.
Probably the markstip tool is asking its parent chart for ClientRect or BoundsRect or something that is forcing to obtain a subchart windows Handle, and so the exception. If the problem is about bounds, the tool itself should have a rectangle, as an alternative to avoid using the control Handle