Hi

I've try use resources like in delphi
I've notice that no function to load bitmap from resource (only truecolor) Than try PNG to store button image but in graphics.pp is bug or I can't understand it.

class tBitmap has
  procedure ReadStream(Stream: TStream; Size: Longint); virtual;
and class tPortableNetworkBitmap has
  procedure ReadStream(Stream: TStream; Size: Longint); override;

but there are not conected ,
I need load resource from different formats

I think it will be better work when we write some like this in each stage of inheritation

 procedure TBitmap.LoadFromLazarusResource(const ResName: String);
var
  ms:TMemoryStream;
  res:TLResource;
begin
  res:=LazarusResources.Find(ResName);
  if (res=nil) or (res.Value='') or not
LazarusResourceTypeValid(res.ValueType)
  then  begin
    inherited;
   ^^^^^^^^
    exit;
end;
  ms:=TMemoryStream.Create;
  try
    ms.Write(res.Value[1],length(res.Value));
    ms.Position:=0;
    LoadFromStream(ms);
  finally
    ms.Free;
  end;
end;

I can work on this, but I don't know if it is the better solution

darek

Hi
I tested XPM before, its work fine but I have many bitmaps in BMP I can't find good tools to convert BMP to XPM
and I think that use PNG will be great

Darek

Try something like this:

Create your graphic, for instance "mypicture.xpm". (Pixmap's work great)

Then convert it to a resource at the command line:

lazres mygraphicresource.lrs mypicture.xpm

In your code use:

MyGraphic := TPixmap.Create;
MyGraphic.LoadFromLazarusResource('mypicture');

in the Initialization section at the end of the unit be sure to add:

{$I mygraphicresource.lrs} // inserts the resource into the unit

-Tony

Darek Mazur wrote

Hi I tested XPM before, its work fine but I have many bitmaps in BMP I can't find good tools to convert BMP to XPM

Have you tried using the netpbm tools, there is a utility amongst them called bmptoppm and then a utility called ppmtoxpm. I use these at work, they're pretty useful.

DC

because a TPortableNetworkBitmap can load .png files, but not bmp/xpm files.

I need load resource from different formats

Use TPicture.

Mattias