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ImageEnMview with a database

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T O P I C R E V I E W
Patrick Quinn	Posted - Jul 19 2017 : 19:20:47 I'm trying to use an TImageEnMView with a database so it shows thumbnails of image fields from the record set of a TDatasource. I've declared fDBMultiBitmap: TIEDBMultiBitmap in Private declarations, and iexBitmaps in uses. It compiles, but when I run it I get an access violation at this line of the form Create event. fDBMultiBitmap := TIEDBMultiBitmap.Create(dmDatabase.dsImages, 'ThumbImage', 'Name', False); (dmDatabase is a data module, dsImages is a TDatasource) It happens on both Delphi 10.1 and 10.2. Any ideas why? ImageEn version 7.0.0
4 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Jul 22 2017 : 00:25:24 No worries, we all have days like that. Nigel Xequte Software www.xequte.com nigel@xequte.com
Patrick Quinn	Posted - Jul 21 2017 : 06:08:05 Hi Nigel I think the exception is being caused by me. I am am calling TIEDBMultiBitmap.Create in the main form create event, and it refers to a datasource in the datamodule, which is created after the main form is created. I'll investigate later. Apologies Patrick EDIT - That was the cause. Now working without problems. Sorry for my stupidity.
Patrick Quinn	Posted - Jul 20 2017 : 08:20:01 Hi Nigel I'm using Absolute Database, a BDE replacement. http://www.componentace.com/bde_replacement_database_delphi_absolute_database.htm I use their table with a Delphi TDataSource. I have had no compatability problems with it and ImageEn. The TImageEnDbView works perfectly with it. The access violation occurs at the TIEDBMultiBitmap.Create line when stepping through the code. When I first put iexDBBitmaps in 'uses' and compiled, I got an error 'Unit iexDBBitmaps not found', so I opened the iexDBBitmaps.pas source code and it compiles. Does iexDBBitmaps.pas need to be compiled into a package for it to work? Patrick
xequte	Posted - Jul 20 2017 : 06:50:10 Hi What sort of database is it? You might want to step into the code to see where the A/V arises. Nigel Xequte Software www.xequte.com nigel@xequte.com