Strange situation

[Molier]

I have three widgets as on the picture:



-Options
-Graph
-the main part with place to show a graph

The point is:
On linux when i switch deskopts (virtual of course) and i come back to see my window;



Why? Only one widget left.
The other question is, why when i put widgets (Options and Graph) on each other, they r supposed to be "tabbed" but they r not! Always one disappear when i try!
I wanna note that i set an option "allow tabbed docks" as a window's property.

[franz]

Could you provide a working example project reproducing this exact problem?

[Molier]

I wante to put my project code here and when i erased some not important parts.. i realized that:

/*
void MainWindow::on_dockWidget_2_visibilityChanged(bool visible)
{
    //it changes menu view's check box sdatus when the widget is hidden/shown
        ui->actionOptions->setChecked(visible);
  
}
 
void MainWindow::on_dockWidget_visibilityChanged(bool visible)
{
                      //in main menu i wanted to check and unchecked buttons
        ui->actionGraph_Options->setChecked(visible);
  
}
*/

/*
void MainWindow::on_dockWidget_2_visibilityChanged(bool visible)
{
    //it changes menu view's check box sdatus when the widget is hidden/shown
        ui->actionOptions->setChecked(visible);
  
}

void MainWindow::on_dockWidget_visibilityChanged(bool visible)
{
                      //in main menu i wanted to check and unchecked buttons
        ui->actionGraph_Options->setChecked(visible);
  
}
*/

To copy to clipboard, switch view to plain text mode 

So this is the code resposible for this. Without this code above, program works fine.

[Molier]

If i put anything else in place which i showed upper, it will be ok, but..

In fact, two menu options:



have these two signals defined:

void MainWindow::on_actionOptions_changed()
{
if(ui->actionOptions->isChecked())  // hiding or showing widgets by menu
    ui->dockWidget_2->show();
else ui->dockWidget_2->hide();
}
 
void MainWindow::on_actionGraph_Options_changed()
{
    if(ui->actionGraph_Options->isChecked())  // hiding or showing widgets by menu
        ui->dockWidget->show();
    else ui->dockWidget->hide();
}

void MainWindow::on_actionOptions_changed()
{
if(ui->actionOptions->isChecked())  // hiding or showing widgets by menu
    ui->dockWidget_2->show();
else ui->dockWidget_2->hide();
}

void MainWindow::on_actionGraph_Options_changed()
{
    if(ui->actionGraph_Options->isChecked())  // hiding or showing widgets by menu
        ui->dockWidget->show();
    else ui->dockWidget->hide();
}

To copy to clipboard, switch view to plain text mode 

This two parts of code work like kind of feedback. They cooperate with each other, but on bad way. I want to have synchronization between check boxes in menu and displaying the widgets. I found sth on forum, but it does not look similar to my example.

[wysota]

Why aren't you using QDockWidget::toggleViewAction()?

[Molier]

If i even move code and finalize it by this way:

void MainWindow::on_actionOptions_toggled(bool n)
{
    if(n)  // hiding or showing widgets by menu
        ui->dockWidget_2->show();
    else ui->dockWidget_2->hide();
}
 
void MainWindow::on_actionGraph_Options_toggled(bool n)
{
    if(n)  // hiding or showing widgets by menu
        ui->dockWidget->show();
    else ui->dockWidget->hide();
}

void MainWindow::on_actionOptions_toggled(bool n)
{
    if(n)  // hiding or showing widgets by menu
        ui->dockWidget_2->show();
    else ui->dockWidget_2->hide();
}

void MainWindow::on_actionGraph_Options_toggled(bool n)
{
    if(n)  // hiding or showing widgets by menu
        ui->dockWidget->show();
    else ui->dockWidget->hide();
}

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It does not change anything. Still the same problems.

[totem]

what suggested wizota is the best way to do what you want

[Molier]

Ok. Finally i removed this option, cause it is useless in this case. But thanx for advice. It will be useful for the future.

[wysota]

Why do you think it's useless? I consider toggling the visibility of a dock widget a very nice commodity in a program.