Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>The GDI+ library is able to save tiff pictures.</p> <p>The SynGdiPlus unit use {557CF405-1A04-11D3-9A73-0000F81EF32E} for its TIFF encoder.</p> <p>From the <code>TSynPicture.SaveAs</code> code, I see two possibilities:</p> <ul> <li>Either you don't have the corresponding TIFF encoder installed;</li> <li>Either there is some missing parameter expected by the TIFF encoder.</li> </ul> <p>Try this version:</p> <pre><code>type /// the optional TIFF compression levels // - use e.g. ord(evCompressionCCITT4) to save a TIFF picture as CCITT4 TGDIPPEncoderValue = ( evColorTypeCMYK, evColorTypeYCCK, evCompressionLZW, evCompressionCCITT3, evCompressionCCITT4, evCompressionRle, evCompressionNone, (...) evFrameDimensionPage); const EncoderCompression: TGUID = '{e09d739d-ccd4-44ee-8eba-3fbf8be4fc58}'; function TSynPicture.SaveAs(Stream: TStream; Format: TGDIPPictureType; CompressionQuality: integer): TGdipStatus; var fStream: IStream; Len,Dummy: Int64; tmp: pointer; Params: TEncoderParameters; PParams: pointer; MS: TMemoryStream absolute Stream; begin if not Gdip.Exists or (Stream=nil) or (fImage=0) then begin result := stInvalidParameter; exit; end; Params.Count := 1; Params.Parameter[0].Type_ := EncoderParameterValueTypeLong; Params.Parameter[0].NumberOfValues := 1; Params.Parameter[0].Value := @CompressionQuality; PParams := nil; case Format of gptJPG: if CompressionQuality&gt;=0 then begin Params.Parameter[0].Guid := EncoderQuality; PParams := @Params; end; gptTIF: begin if not (TGDIPPEncoderValue(CompressionQuality) in [ evCompressionLZW, evCompressionCCITT3, evCompressionCCITT4, evCompressionRle, evCompressionNone]) then // default tiff compression is LZW CompressionQuality := ord(evCompressionLZW); Params.Parameter[0].Guid := EncoderCompression; PParams := @Params; end; end; CreateStreamOnHGlobal(0, true, fStream); (...) </code></pre> <p>It will add the <code>EncoderCompression</code> parameter for TIFF pictures, which <a href="http://msdn.microsoft.com/en-us/library/ms533839%28VS.85%29.aspx" rel="nofollow">seems to be required</a>.</p> <p>I've updated the source code repository version to include this correction.</p>
    singulars
    1. This table or related slice is empty.
    1. POHow can I scan a 300dpi image and save in TIFF format using Delphi?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USArnaud Bouchez
    1. USArnaud Bouchez
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COMerci Beaucoup! Tiff generation works great. But it didn´t save in 300dpi. But I think this is not related to your library. The error should be in Twain config.
      singulars
      1. PO
      1. USJosir
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload