| T O P I C R E V I E W |
| wolf1860 |
Posted - Mar 21 2018 : 11:22:55
I load images from database to TImageEnMView,when I load the record,I want to bind some string value such as "Id" field value to the image item,How should I do?
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| 4 L A T E S T R E P L I E S (Newest First) |
| wolf1860 |
Posted - Mar 22 2018 : 08:47:43
Thanks u very much! |
| xequte |
Posted - Mar 21 2018 : 21:47:29
Hi
There are a number of properties available for custom use, e.g.
https://www.imageen.com/help/TImageEnMView.ImageTag.html
https://www.imageen.com/help/TImageEnMView.ImageUserPointer.html
Nigel
Xequte Software
www.imageen.com |
| wolf1860 |
Posted - Mar 21 2018 : 21:15:55
Thanks for ur reply.
Maybe I did not express my request clearly,I just need the bind value when the image is loaded to the TImageEnMView,and I can get the value when the user doubleClick the image item.When I set the topText property,I don't know how to to hide it. |
| w2m |
Posted - Mar 21 2018 : 11:54:48
You might be able by setting one of the TImageEnMView text properties to the string from the database or by adding the string to an EXIF parameter.
ImageEnMView1.ImageTopText[i] := iDimensions + ' ' + iColor;
ImageEnMView1.ImageBottomText[i] := 'Frame ' + IntToStr(i + 1);
The text is not saved with the image.
You might also look at TIEDictionary class in hyieutils.pas. I have never used TIEDictionary, so I do not know much about it.
Look in the help file or in the online help for TIEDictionary or EXIF.
Another possible way is with WriteHiddenText/ReadHiddenText.
TImageEnProc.WriteHiddenText
Declaration
function WriteHiddenText(text: AnsiString): Integer;
Description
WriteHiddenText and WriteHiddenData write hidden text or raw data within a true color image. Hidden information is stored inside the image (uses a pixel color modulation) and is independent of the image file format.
Use WriteHiddenText to write a simple string or WriteHiddenData to write a block of bytes (e.g. to embed a hidden image or sound).
Note: The hidden text will be lost if you save the image as Jpeg or if you subsample the colors.
Example
// Hide "Copyright by XYZ" in 'alfa.tif'
ImageEnView1.Proc.WriteHiddenText('Copyright by XYZ');
ImageEnView1.IO.SaveToFile('D:\alfa.tif');
// Read simple string from 'alfa.tif'
ImageEnView1.IO.LoadFromFile('D:\alfa.tif');
mystring := ImageEnView1.Proc.ReadHiddenText;
Demo
Demos\FullApps\PhotoEn3\ImageEx.dpr
Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development |
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