Bug #3199: setHeaderAlignment and setHeadeWordWrap for TableView crashes my app - Wt - Redmine

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Bug #3199

closed

setHeaderAlignment and setHeadeWordWrap for TableView crashes my app

Added by Anonymous almost 11 years ago. Updated over 10 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Koen Deforche

Target version:

Start date:

05/24/2014

Due date:

% Done:

Estimated time:

Description

I derived a class from WTableView to obtain an extra row below the header (for filter data input). But it's not clear where I should call the following:

setHeaderAlignment(column, Wt::AlignTop);

setHeaderWordWrap(column, false);

If I call them as shown below my program crashes.

My class is:

class MyTableView : public Wt::WTableView {

public:

MyTableView(Wt::WContainerWidget* parent = 0) : Wt::WTableView(parent)

{

setHeaderHeight(40, true);

}

Wt::WWidget* createExtraHeaderWidget(int column)

{

setHeaderAlignment(column, Wt::AlignTop);

setHeaderWordWrap(column, false);

return new Wt::WLineEdit(dynamic_cast<Wt::WContainerWidget*>(parent()));

}

};

Another quirk I noticed is I get these warnings:

[2014-May-23 16:33:39.321065] 39039 [/ GDkSlgc77gWJzoDt] [warning] "WContainerWidget: addWidget(): reparenting widget"

Thanks

Suresh

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Before.PNG (19.7 KB) Before.PNG		Suresh Easwar, 05/28/2014 06:05 PM
After.PNG (19 KB) After.PNG		Suresh Easwar, 05/28/2014 06:05 PM

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Updated by Koen Deforche almost 11 years ago

Status changed from New to Feedback

Hey,

The following calls need to be done at contruction time (not from within createExtraWidget()):

setHeaderAlignment(column, Wt::AlignTop | Wt::AlignJustify);
setHeaderWordWrap(column, false);

Regards,

koen

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Updated by Suresh Easwar almost 11 years ago

File Before.PNG Before.PNG added
File After.PNG After.PNG added

The problem is that at construction time my model does not necessarily know the number of columns it will contain. it actually starts with 0 rows and 0 columns. Is there a 'column-added' signal that I can listen for and put these calls in the corresponding slot?

In any case, to test out the calls, I forced the model to start with a fixed number of columns. Now I do see the edit boxes below the headers. But when I try to shrink the column widths, the edit box disappears and the header is squished one line below. I attached images to show the problem.

Thanks

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