Creer Jpg a partir d'HEXA [Résolu]
papyvore
159
Messages postés
samedi 15 novembre 2003Date d'inscription
1 août 2018
Dernière intervention
-
10 janv. 2016 à 10:49 - Dernière réponse :
Cirec
4231
Messages postés
vendredi 23 juillet 2004Date d'inscriptionModérateurStatut
3 août 2018
Dernière intervention
- 10 janv. 2016 à 18:00
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8 réponses
Salut,
essayes comme ceci :
j'ai pas testé mais ça devrait résoudre ton problème ;)
essayes comme ceci :
var
EncdStream: TMemoryStream;
Jpeg: TJPEGImage;
format : integer;
begin
EncdStream := TMemoryStream.Create;
try
// Modification:
Jpeg := TJPEGImage.Create;
try
Memo1.Lines.SaveToStream(EncdStream,TEncoding.Default) ;
Jpeg.LoadFromStream(EncdStream);
Image1.Picture.Assign(Jpeg);
finally
Jpeg.Free;
end;
finally
EncdStream.Free;
end;
end;
j'ai pas testé mais ça devrait résoudre ton problème ;)
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4CF14E8F93934099FFD9 <signature>papyvore</signature>
Voici la solution testé OK sous D7:
implementation
{$R *.dfm}
function ExcludeChars(const S : string; const CS : TSysCharSet): string;
var
P, PR : {$IFDEF UNICODE}PWord;{$ELSE}PByte;{$ENDIF}
Size, I : Integer;
begin
P := {$IFDEF UNICODE}PWord{$ELSE}PByte{$ENDIF}(S);
Size := Length(S);
SetLength(Result, Size);
PR := {$IFDEF UNICODE}PWord{$ELSE}PByte{$ENDIF}(Result);
I := 0;
while P^ <> $0 do begin
if not (Chr(P^) in CS) then begin
Pr^ := P^;
Inc(Pr);
end
else Inc(I);
Inc(P);
end;
if I > 0 then SetLength(Result, Size - I)
end;
procedure StrToImage(aStrImage: AnsiString; aImage: TImage);
// cette fonction ne sert qu'à afficher une image Jpeg contenue dans une string
var MS: TMemoryStream;
JPG: TJPEGImage;
begin
if aStrImage = '' then
Exit;
MS := TMemoryStream.Create;
with MS do
try
SetSize(Length(astrImage));
MoveMemory(Memory, PByte(aStrImage), Length(astrImage));
Seek(0, soFromBeginning);
SaveToFile('test.jpg');
if (aImage.Picture.Graphic is TJPEGImage) then
TJPEGImage(aImage.Picture.Graphic).LoadFromStream(MS)
else
begin
JPG := TJPEGImage.Create;
try
JPG.LoadFromStream(MS);
aImage.Picture.Assign(JPG);
finally
JPG.Free;
end;
end;
finally
Free;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
aStr: string;
begin
Memo1.Text := ExcludeChars(Memo1.Text, [#13, #10]);
SetLength(aStr, Length(Memo1.Text));
HexToBin(PChar(Memo1.Text), PChar(aStr), Length(aStr));
StrToImage(aStr, Image1);
end;
end.
re,
dans ce cas tu peux te passer de la ligne suivante:
au pire il faut changer les string en AnsiString
et les PChar en PAnsiChar
Voilà ... si ça te convient n'oublie pas de cliquer sur "Marquer comme résolu"
Merci
pour les retours chariots et les lignes blanches c'est une erreur que j'ai fait en créant le fichier txt.
dans ce cas tu peux te passer de la ligne suivante:
Memo1.Text := ExcludeChars(Memo1.Text, [#13, #10]);et du même coup de la fonction ExcludeChars
merci OK en D7 je vais regarder si je peu transposer XE8ça devrait passer tel quel !!
au pire il faut changer les string en AnsiString
et les PChar en PAnsiChar
procedure TForm1.Button1Click(Sender: TObject); var aStr: AnsiString; begin SetLength(aStr, Length(Memo1.Text)); HexToBin(PAnsiChar(Memo1.Text), PAnsiChar(aStr), Length(aStr)); StrToImage(aStr, Image1); end;
Voilà ... si ça te convient n'oublie pas de cliquer sur "Marquer comme résolu"
Merci
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