Search found 5 matches
- Fri Mar 07, 2025 10:54 am
- Forum: VCL
- Topic: Performance Issue with Grid Lines and PenStyle psDot
- Replies: 5
- Views: 26074
Re: Performance Issue with Grid Lines and PenStyle psDot
Hello Yeray Now that we, with your kind assistance, have realized that some of our challenges with TChart redraw performance is related to GDI+ we are looking at ways to work around this. However due to the differences in graphics and behavior we have seen when replacing the GDI+ canvas with the TGL...
- Thu Feb 27, 2025 12:56 pm
- Forum: VCL
- Topic: Performance Issue with Grid Lines and PenStyle psDot
- Replies: 5
- Views: 26074
Re: Performance Issue with Grid Lines and PenStyle psDot
Hello Yeray We are compiling a list of changes that we observe when using TGLCanvas instead of the GDI+ canvas, but to keep the thread on track we want to respond to the question of the panning event. What we observe is that the TChartImageTool works in a different way when panning and TChart uses t...
- Wed Jan 22, 2025 12:44 pm
- Forum: VCL
- Topic: Performance Issue with Grid Lines and PenStyle psDot
- Replies: 5
- Views: 26074
Re: Performance Issue with Grid Lines and PenStyle psDot
Thank you for the suggestion, the TGLCanvas does draw punctured gridlines faster. Unfortunately the OpenGL canvas is not a seamless 1:1 replacement of the GDI+ version, and we have run into various small and big issues when testing with our app. The minor issues are the placement of text and labels,...
- Thu Dec 19, 2024 4:40 pm
- Forum: VCL
- Topic: Mouse handling in TTree
- Replies: 1
- Views: 13725
Re: Mouse handling in TTree
Hi Mikael Maybe you could use TTree.CancelMouse in the MouseMove event to stop the "sticky mouse". If you add a state variable " mbRightIsPressed " to your form and set it in the Tree.OnMouseDown event handler: mbRightIsPressed := (Button = TMouseButton.mbRight); and reset the variable in the Tree.O...
- Thu Dec 19, 2024 9:43 am
- Forum: VCL
- Topic: Performance Issue with Grid Lines and PenStyle psDot
- Replies: 5
- Views: 26074
Performance Issue with Grid Lines and PenStyle psDot
Hello Steema Support, I am experiencing significant performance degradation when enabling minor grid lines in TChart. Here are the details: - TChart Version: 2023.38.230607 - Delphi Version: Delphi 11 - Operating System: Windows 11 Enterprise Description: When I enable minor grid lines in a TChart, ...