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# Splitter

This example shows how to use splitters. With their help users can decide for themselves how much space each child item should get.

Implementation:

    /****************************************************************************
    ** $Id: qt/splitter.cpp   3.3.8   edited Jan 11 14:37 $
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of an example program for TQt.  This example
    ** program may be used, distributed and modified without limitation.
    **
    *****************************************************************************/

    #include <ntqapplication.h>
    #include <ntqlabel.h>
    #include <ntqsplitter.h>
    #include <ntqmultilineedit.h>

    #include <ntqpainter.h>

    class Test : public TQWidget {
    public:
        Test(TQWidget* parent=0, const char* name=0, int f=0);
        void paintEvent(TQPaintEvent* e);
    private:
    };

    Test::Test(TQWidget* parent, const char* name, int f) :
        TQWidget(parent, name, f)
    {

    }

    void Test::paintEvent(TQPaintEvent* e)
    {
        TQPainter p(this);
        p.setClipRect(e->rect());
        const int d = 1000; //large number
        int x1 = 0;
        int x2 = width()-1;
        int y1 = 0;
        int y2 = height()-1;

        int x = (x1+x2)/2;
        p.drawLine( x, y1, x+d, y1+d   );
        p.drawLine( x, y1, x-d, y1+d   );
        p.drawLine( x, y2, x+d, y2-d   );
        p.drawLine( x, y2, x-d, y2-d   );

        int y = (y1+y2)/2;
        p.drawLine( x1, y, x1+d, y+d   );
        p.drawLine( x1, y, x1+d, y-d   );
        p.drawLine( x2, y, x2-d, y+d   );
        p.drawLine( x2, y, x2-d, y-d   );
    }

    int main( int argc, char ** argv )
    {
        TQApplication a( argc, argv );

        TQSplitter *s1 = new TQSplitter( TQSplitter::Vertical, 0 , "main" );

        TQSplitter *s2 = new TQSplitter( TQSplitter::Horizontal, s1, "top" );

        Test *t1 = new Test( s2, "topLeft" );
        t1->setBackgroundColor( TQt::blue.light( 180 ) );
        t1->setMinimumSize( 50, 0 );

        Test *t2 = new Test( s2, "topRight" );
        t2->setBackgroundColor( TQt::green.light( 180 ) );
        s2->setResizeMode( t2, TQSplitter::KeepSize );
        s2->moveToFirst( t2 );

        TQSplitter *s3 = new TQSplitter( TQSplitter::Horizontal,  s1, "bottom" );

        Test *t3 = new Test( s3, "bottomLeft" );
        t3->setBackgroundColor( TQt::red );
        Test *t4 = new Test( s3, "bottomMiddle" );
        t4->setBackgroundColor( TQt::white );

        Test *t5 = new Test( s3, "bottomRight" );
        t5->setMaximumHeight( 250 );
        t5->setMinimumSize( 80, 50 );
        t5->setBackgroundColor( TQt::yellow );

    #ifdef Q_WS_QWS
        // TQt/Embedded XOR drawing not yet implemented.
        s1->setOpaqueResize( TRUE );
    #endif
        s2->setOpaqueResize( TRUE );
        s3->setOpaqueResize( TRUE );

        a.setMainWidget( s1 );
        s1->setCaption("TQt Example - Splitters");
        s1->show();
        int result = a.exec();
        delete s1;
        return result;
    }

See also Examples.