Welcome, Guest
Username: Password: Remember me
Components and Libraries for Graphics Development, discussions, problems and suggestions.
  • Page:
  • 1

TOPIC:

Graphics32 problem on UBUNTU 12.04 LTS 10 years 9 months ago #5244

  • jfmadre60
  • jfmadre60's Avatar Topic Author
  • Visitor
  • Visitor
I am completely novice on Linux. I try to compile under Linux a soft writed under Lazarus windows.
CodeTyphon installation seems to work properly (Thanks :) ), But Graphics32 of CodeTyphon under Linux Ubuntu do not works properly :
trying to write something in a TImage32 (either using Image32.Bitmap.Textout or RenderText function causes an error in the unit unit GR32_Backends_LCL_Gtk.
it seems that the FCanvas used in TLCLBackend remains always = nil, and then all the function using the Canvas property of the Bitmap32 causes an error.
Draw function also does'nt work.
I have found no solution except create in my soft a TBitmap , writing the text in it, and copy the result pixel by pixel using Pixels functions.
Is there a better solution ?
Thanks

Please Log in or Create an account to join the conversation.

Graphics32 problem on UBUNTU 12.04 LTS 10 years 9 months ago #5245

  • Sternas Stefanos
  • Sternas Stefanos's Avatar
  • Offline
  • Moderator
  • Moderator
  • Ex Pilot, M.Sc, Ph.D
  • Posts: 4540
  • Thank you received: 1117
Thanks Sir,
can you give us more source info and your CT ver ?
PilotLogic Architect and Core Programmer

Please Log in or Create an account to join the conversation.

Graphics32 problem on UBUNTU 12.04 LTS 10 years 9 months ago #5246

  • jfmadre60
  • jfmadre60's Avatar Topic Author
  • Visitor
  • Visitor
CT 4.70
Minimum Source to detect the problem :
1 MainForm with just 1 component TImage32, 1 TEdit to enter text and a button to write the text of the edit on the Timage32
Image32 : TImage32;
Edit1 : TEdit;
Button1 : TButton;
procedure TMainForm.FormCreate(Sender: TObject);
begin
Image32.Bitmap.Width:=Image32.Width;
Image32.Bitmap.Height:=Image32.Height;
Image32.Bitmap.Clear($FFFFFFFF);
end;
procedure Button1Click(Sender: TObject);
begin
Image32.Bitmap.TextOut(5,5,Edit1.Text);
end;

There is an error when I click on the Button (that calls Button1Click). Any other TBitmap32 procedure that uses at any moment the Canvas property (RenderText, Draw, TextWidth...) causes also an error.
Thanks for your help.

Please Log in or Create an account to join the conversation.

  • Page:
  • 1