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TADONKI Claude
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 Posted: Fri Feb 13, 2004 10:13 am Post subject: Working with Picture.Data |
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Hi,
I am looking for a way to get the image from the Picture.Data variable
of a form (available in the .dfm version). The value of this variable is
a suceesion of capital letters with numbers. Suppose you have this in a
AnsiString variable and want to get the image in TGraphic variable. What
is the correct command ?
Thanks for any help,
Claude
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Ronald Loonstra
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| Posted: Fri Feb 13, 2004 5:08 pm Post subject: Re: Working with Picture.Data |
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Hi Claude,
If your goal is to put the content of a TPicture in a TGraphic the function
Assign() will suffice, f.e:
graphic->Assign(Form1->Image1->Picture->Bitmap);
HTH
Ronald
"TADONKI Claude" <claude.tadonki (AT) unige (DOT) ch> schreef in bericht
news:402CA366.3C408824 (AT) unige (DOT) ch...
| Quote: | Hi,
I am looking for a way to get the image from the Picture.Data variable
of a form (available in the .dfm version). The value of this variable is
a suceesion of capital letters with numbers. Suppose you have this in a
AnsiString variable and want to get the image in TGraphic variable. What
is the correct command ?
Thanks for any help,
Claude
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TADONKI Claude
Guest
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| Posted: Fri Feb 13, 2004 5:17 pm Post subject: Re: Working with Picture.Data |
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Thanks for your reply,
but my goal is to get back an image from the Picture.Data variable of the .dfm
version. I am interested in uderstanding the encoding used to store the image
permanently inside a form, and try to manipulate it as desired.
Regards,
Claude
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Ronald Loonstra
Guest
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| Posted: Fri Feb 13, 2004 11:44 pm Post subject: Re: Working with Picture.Data |
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Claude,
Can't help you too much with this..
I took a look at a small bitmap:
The dfm says:
Picture.Data = {
07544269746D6170BE000000424DBE0000000000000076000000280000000A00
000009000000010004000000000048000000D40E0000D40E0000100000001000
000000000000BDBDBD00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
FF00111111111100200010011110010020001100110011007000111000011100
720011110011110000F011100001110079001100110011006500100111100100
6C001111111111006900}
Loading the bitmap file directly in a texteditor:
BM¾ v (
H Ô Ô ½½½ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ
ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ ÿÿÿ p r ð y
e l i
So it looks to be a hexadecimal representation of (in this case) a bitmap
structure: the ascii-value of "BM" is hex 424D. The ascii-value of "i" = hex
69. Don't know what the header (all values before "BM") represents.
The structure will differ with all the different image-formats which can be
stored in a .dfm: jpeg, gif etc., depending of any (3rd-party)
image-libraries you may have installed.
Maybe someone else can enlighten you more?
Greetings,
Ronald
"TADONKI Claude" <claude.tadonki (AT) unige (DOT) ch> schreef in bericht
news:402D06BB.974973D4 (AT) unige (DOT) ch...
| Quote: | Thanks for your reply,
but my goal is to get back an image from the Picture.Data variable of the
..dfm
version. I am interested in uderstanding the encoding used to store the
image
permanently inside a form, and try to manipulate it as desired.
Regards,
Claude
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