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Cannot Assign Picture To Tbitmap


It worked for JPGs but not for PNGs. –James L. TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. When to use what? > And how should I use them to convert between graphic file formats? The conversion cannot be done by the system WIN32 itself.Applications typically use some DLLs which provide the JPEG data handling features. http://electrictricycle.net/cannot-assign/cannot-assign-to.html

A Delphi TBitmap is multi-purpose in that it covers the above functionality, but is also *the* graphic object on the windows level. If the bitmap needs to be changed, the actual bitmap image is copied before the changes are made (copy on write). Thank you so much! How to convert a jpg to bmp? http://www.delphipages.com/forum/showthread.php?t=188094

Delphi Tjpegimage

Mysterious creeper-like explosions Heroku Gives me Error like "Push rejected, Unauthorized access." Find the function given its Fourier series This is my pillow Is there a name for the (anti- ) DoNotEven (Programmer) (OP) 20 Jun 01 09:58 Thanks JamesBut I still do not have my questions answered.Please someone help me out.Thanks,Bob RE: How to print a jpg image? Not sure about your problem.

IIRC it _is_ implemented for TGraphic, so try : : [code]: if Assigned(loBitmap) then loBitmap.Graphic.Assign(poBitmap.Graphic); : [/code]: : hth, pritaeas: : : I am trying to assign a TBitmap to another Resources Join | Indeed Jobs | Advertise Copyright © 1998-2016 ENGINEERING.com, Inc. Underneath, this does *not* involve creating a second raster and copying the pixel data, but boils down to sharing the raster object and incrementing its usage counter, eliminating the need for Delphi Tpngimage There's a reason that there is no matching TPicture.LoadFromStream method.

Click Here to join Tek-Tips and talk with other members! Twicimage Internally, these TJpegImage and TBitmap objects are supposed to maintain rasters with usage counters. files automatically without even knowing/checking the file format, and convert that accordingly. procedure DetectImage(const InputFileName: string; BM: TBitmap); var FS: TFileStream; FirstBytes: AnsiString; Graphic: TGraphic; begin Graphic := nil; FS := TFileStream.Create(InputFileName, fmOpenRead); try SetLength(FirstBytes, 8); FS.Read(FirstBytes[1], 8); if Copy(FirstBytes, 1, 2) =

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I really don't understand this error ?PS : The original Bitmap is loaded on a TFrame in a DLL. http://docs.embarcadero.com/products/rad_studio/delphiAndcpp2009/HelpUpdate2/EN/html/delphivclwin32/jpeg_TJPEGImage_Assign.html It is fairly easy to locate one in your Windows/system directory.The problem is that to make use of it you need to know the interface of the JPEG routines in it Delphi Tjpegimage Thanks again! 0 LVL 32 Overall: Level 32 Delphi 19 Message Expert Comment by:ewangoya2011-03-08 Glad to help 0 Message Author Comment by:DMTrump2011-03-08 So just a final clarification: I already Delphi Jpeg To Bitmap Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.Tek-Tips Posting Policies Jobs Jobs from Indeed What: Where: jobs by Link To This Forum!

Close Reply To This Thread Posting in the Tek-Tips forums is a member-only feature. this contact form so your program works fine if your input picture is bmp otherwise img.Picture.bitmap is empty. Word for "using technology inappropriately"? C++ Examples: Copy Code /* This example converts a bitmap image to a jpeg file by using the Assign method. Delphi Timage

you can use img.Picture.graphic Go to Solution 19 Comments LVL 32 Overall: Level 32 Delphi 19 Message Expert Comment by:ewangoya2011-03-08 use this JPeg uses JPeg; var B: TBitmap; Never be called into a meeting just to get it started again. One bitmap is monchrome, which means all non-white colors become black. have a peek here RE: How to print a jpg image?

It is capable of detecting the image type from a stream. Categories 141.9K All Categories104.9K Programming Languages 6.4K Assembler Developer 1.9K Basic 39.9K C and C++ 4.3K C# 7.9K Delphi and Kylix 4 Haskell 9.6K Java 4.1K Pascal 1.3K Perl 2K PHP Dec 8 '14 at 19:28 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using

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Thus, it's also a more or less file format independent thingy that you use for holding temporary buffers and such. so your program works fine if your input picture is bmp otherwise img.Picture.bitmap is empty. Register FAQ Community Calendar Today's Posts Search Community Links Members List Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... I always used Jedi in the past for GIF support. –Jim McKeeth Jun 6 '09 at 22:43 add a comment| up vote 12 down vote accepted I've found a simpler way!

Assign creates a new link to the internal jpeg data source by which the jpeg image objects do reference counting and handle sharing. Pascal procedure Assign(Source: TPersistent); override; C++ virtual __fastcall Assign(TPersistent * Source); Description Assign copies the jpeg image contained in Source to the jpeg image object. CottinghamI am the Unknown lead by the Unknowing.I have done so much with so little for so long that I am now qualified to do anything with nothing. http://electrictricycle.net/cannot-assign/cannot-assign.html I'm using Delphi 2007/2009 Thank you.

bm:=TBitmap.Create; bm.Height:=img.Height; bm.width:=img.Width; bm.assign(img.Picture.bitmap); _form.AddBitMap(bm); bm.Free; img.Free; 0 Question by:DMTrump Facebook Twitter LinkedIn Google LVL 2 Best Solution Join and Comment By clicking you are agreeing to Experts Exchange's Terms of Use. a LoadFromFile method, since it can detect the file extension from the file name, deduce what is the proper TGraphic type, start managing such a descendant TGraphic, and delegate the real If the file has an extension you can use the following code, as noted by others the TPicture.LoadFromFile looks at the extensions registered by the inherited classes to determine which image

Image-editing tools usually use one pixel for all internal image operations and copy the results to the screen (in whatever format) as the last step.*******************Provides indexed access to each line of Guest (visitor) 14 Sep 01 12:22 Hallo, ich möchte ein JGP mit der Auflösung 1600x1200 Pixel in ein JPG mit der Auflösung 360x270 Pixel umwandeln.Wer hat eine Idee.Danke Ralf Red Flag By joining you are opting in to receive e-mail.