| Re: [platform-swt-dev] Table cell tooltip problem |
Hi,
please ask this kind of question on the newsgroups. If you want to see
examples of the new Tooltip features. I'll answer your question there.
Tom
Alexander Saar schrieb:
> Hi everbody,
> I have a question regarding the tooltip support for table cells.
>
> I recently updated to SWT 3.3M5 and tried the new tooltip feature for
> table cells. Following the API docs, I created a CellLabelProvider with
> support for tooltips and added it to a ViewerColumn:
>
>
> // create table viewer
> taskTableViewer = new TableViewer(table);
>
> // create columns
> TableColumn titleCol = new TableColumn(table, SWT.NONE);
> titleCol.setResizable(false);
> titleCol.setWidth(100);
> titleCol.setText("Title");
>
> TableViewerColumn vCol = new TableViewerColumn(taskTableViewer,
> titleCol);
>
> vCol.setLabelProvider(new TaskTableLabelProvider());
> taskTableViewer.setColumnPart(vCol, 0);
>
>
> After starting my application, I didn't get any output in my table.
> After some debugging, I found out that the getColumnText() method is
> never called. (same holds true for getColumnImage()).
>
> After that I tried to add the label provider additionally to my
> TableViewer.
>
>
> TaskTableLabelProvider provider = new TaskTableLabelProvider();
> taskTableViewer.setLabelProvider(provider);
>
>
> This results in having the original cell text display. If I hover over
> the cell, an empty tooltip gets display. Again I started the debugger
> and found out, that a default instance of CellLabelProvider is called
> (wich returns null) by the framework and not my specialized implementation.
>
> Any hint what I did wrong or how I can fix this problem?
>
> Best regards,
> Alex
>
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> platform-swt-dev@xxxxxxxxxxx
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