Winapi DrawText on chart no longer use canvas settings

[athely]

Hi,

Since i've upgrade my RAD from D2009 to XE10.1 and Teechart from 8.08 to 2017.10, DrawText function (from winapi unit) no longer use canvas settings as font color, size, etc...
Same function on TImage canvas works fine!

TestTChartDrawFunction.png (65.07 KiB) Viewed 17985 times

Please find attached small project highlighting problem.
I use Delphi XE10.1 and TeeChart Pro VCL FMX Source Code 2017.20.

Thanks for your help

Anthony

[Yeray]

Hello Anthony,

It works as always if you switch back from GDIPlus to GDI:

Code: Select all

uses TeCanvas;
//...
  Chart.Canvas:=TTeeCanvas3D.Create;

[athely]

Ok thank, it works finein GDI mode!

Is it planned to fix problem in GDIPlus?

Anthony

[Marc]

Hello Anthony,

We don't have this listed to modify for GDI+. There is the alternative approach using TeeChart's own TextOut.

eg.

Code: Select all

Chart.Canvas.Font.Color := clred;
  Chart.Canvas.Font.Size := 15;
  Chart.Canvas.TextOut(r.Left,r.Top,str);

You'd need to add some code to divide up your lines at the spaces.

Regards,
Marc Meumann

[odaumas]

Hello anyone,
Back to this problem.
The use of DrawText being much more powerful than the use of TextOut, isn't the correction of this regression planned yet ?

[Marc]

Hello,

When using GDI+, TeeChart uses the GDI+ DrawString method internally.

Regards,
Marc Meumann