Hey Guys,

i'm pretty new to QT - actually i'm using QT Jambi. I am stuck solving this problem:

i am building a QWidget which gets it's content from a generated QUiForm. This consists mainly of a QGridLayout, which i want to refill on resize. So what i have to do is either clean the QGridLayout and fill it with my new "icons" or swap the old QGridLayout with a new one.

The Problem is - that i can't do either. It seems that QT Jambi has no method for a QLayout to clear all items. Also my attempts to just swap the old with the new one did not work. It seems, that nor can't i remove the old one, but neither can i swap it with giving it a new layout. It says:"QLayout: Attempting to add QLayout "" to QWidget "Overview", which already has a layout"

Here's my code:


Qt Code: 
  1. private void rearrangeIcons(QSize size){
  2.     	int anzahlReihen = size.width()/55;
  3.     	int anzahlZeilen = size.height()/70;
  4.     	int gesamt = anzahlReihen * anzahlZeilen;
  5.     	QGridLayout layout = new QGridLayout(install_base.parent);
  6.  
  7.     	int row = 0;
  8.     	int column = 0;
  9.     	int current = 0;
  10.     	for(Entry<String, String> entry : icons.entrySet()){
  11.     		if(column > anzahlReihen){
  12.     			column = 0;
  13.     			row++;
  14.     		}
  15.  
  16.     		layout.addLayout(getLabeledIcon(entry.getKey(), entry.getValue()), row, column, 1, 1);
  17.     		System.out.println("Adding "+entry.getKey()+ " "+ entry.getValue()+" current Index: "+current+ " to Row "+row+" and Column "+column);
  18.     		column++;
  19.     		current++;
  20.     	}
  21.  
  22.     	while(current < gesamt){
  23.  
  24.     		if(column > anzahlReihen){
  25.     			column = 0;
  26.     			row++;
  27.     		}
  28.  
  29.     		layout.addLayout(new QVBoxLayout(), row, column, 1, 1);
  30.  
  31.     		column++;
  32.     		current++;
  33.     	}
  34.  
  35.     	repaint();
  36.     }
  37. }
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Qt Code: 
  1. public QGridLayout gridLayout_2;
  2.     public QTreeView treeView;
  3.     public QLabel label;
  4.     public QWidget parent;
  5.     public QScrollArea scrollArea;
  6.     public QLayout layout;
  7.     public QGridLayout currentLayout;
  8.  
  9.     public Ui_GridView() { super(); }
  10.  
  11.     public void setupUi(QWidget Overview)
  12.     {
  13.     	parent = Overview;
  14.         Overview.setObjectName("Overview");
  15.         Overview.resize(new QSize(261, 592).expandedTo(Overview.minimumSizeHint()));
  16.         layout = new QFormLayout(parent);
  17.       }
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I would be very happy for every help!

Greetings,
Geki