Why treview highlight bar become gray?

["Jian Zhang" <jian zhang broadcom com>]

Hi,

 

I'm having a problem with the highlight bar of my gtk treeveiw widget, and appreicate if someone can give me some advice.

 

If I create a treeview widget and add it into a top level gtk window widget directly (see scenario 1 below), the highlight bar is blue as expected.

 

But if instead of adding the treeview widget into window directly I remove a pre-exist widget from toplevel window first and then add my treeview widget into it(see scenario 2 below), the highlight bar turns gray. Does anybody know what happened here and how to solve this?

 

Thanks,

Jian Zhang

 

 

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Scenario 1:

If my code runs the  following sequence, the highlight bar is blue which is fine with me:

 

    1. Create a gtk toplevel window;

    2. Create a gtk treeview widget and set selection;

    3. gtk_container_add treeview widget into window and gtk_show_all.

 

===============================================================

 

Scenario 2:

If my code works like this, the highlight bar turns gray:

 

    1. Create a gtk toplevel window A;

    2. Create a whatever widget (for example a table) B, then add it into A;

    3. gtk_show_all (I can see B on my LCD);

    4. Create a treeview widget C and set selection;

    5. gtk_container_remove B from A;

    5. gtk_container_add C into A (Now I see C on my LCD but highlight bar is gray instead of blue).