You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
212 lines
10 KiB
212 lines
10 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/layout/layout.doc:4 -->
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|
<title>Layout Managers</title>
|
|
<style type="text/css"><!--
|
|
fn { margin-left: 1cm; text-indent: -1cm; }
|
|
a:link { color: #004faf; text-decoration: none }
|
|
a:visited { color: #672967; text-decoration: none }
|
|
body { background: #ffffff; color: black; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|
<tr bgcolor="#E5E5E5">
|
|
<td valign=center>
|
|
<a href="index.html">
|
|
<font color="#004faf">Home</font></a>
|
|
| <a href="classes.html">
|
|
<font color="#004faf">All Classes</font></a>
|
|
| <a href="mainclasses.html">
|
|
<font color="#004faf">Main Classes</font></a>
|
|
| <a href="annotated.html">
|
|
<font color="#004faf">Annotated</font></a>
|
|
| <a href="groups.html">
|
|
<font color="#004faf">Grouped Classes</font></a>
|
|
| <a href="functions.html">
|
|
<font color="#004faf">Functions</font></a>
|
|
</td>
|
|
<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Layout Managers</h1>
|
|
|
|
|
|
<p>
|
|
This example shows simple and intermediate use of TQt's layout
|
|
classes, <a href="qgridlayout.html">TQGridLayout</a>, <a href="qboxlayout.html">TQBoxLayout</a> etc.
|
|
<p> <hr>
|
|
<p> Implementation:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/layout.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 <<a href="qapplication-h.html">ntqapplication.h</a>>
|
|
#include <<a href="tqlabel-h.html">tqlabel.h</a>>
|
|
#include <<a href="tqcolor-h.html">tqcolor.h</a>>
|
|
#include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>>
|
|
#include <<a href="qlayout-h.html">ntqlayout.h</a>>
|
|
#include <<a href="qlineedit-h.html">ntqlineedit.h</a>>
|
|
#include <<a href="qmultilineedit-h.html">ntqmultilineedit.h</a>>
|
|
#include <<a href="tqmenubar-h.html">tqmenubar.h</a>>
|
|
#include <<a href="tqpopupmenu-h.html">tqpopupmenu.h</a>>
|
|
|
|
class ExampleWidget : public <a href="tqwidget.html">TQWidget</a>
|
|
{
|
|
public:
|
|
ExampleWidget( <a href="tqwidget.html">TQWidget</a> *parent = 0, const char *name = 0 );
|
|
~ExampleWidget();
|
|
};
|
|
|
|
<a name="f260"></a>ExampleWidget::ExampleWidget( <a href="tqwidget.html">TQWidget</a> *parent, const char *name )
|
|
: <a href="tqwidget.html">TQWidget</a>( parent, name )
|
|
{
|
|
// Make the top-level layout; a vertical box to contain all widgets
|
|
// and sub-layouts.
|
|
<a href="qboxlayout.html">TQBoxLayout</a> *topLayout = new <a href="qvboxlayout.html">TQVBoxLayout</a>( this, 5 );
|
|
|
|
// Create a menubar...
|
|
<a href="tqmenubar.html">TQMenuBar</a> *menubar = new <a href="tqmenubar.html">TQMenuBar</a>( this );
|
|
<a name="x540"></a> menubar-><a href="tqmenubar.html#setSeparator">setSeparator</a>( TQMenuBar::InWindowsStyle );
|
|
<a href="tqpopupmenu.html">TQPopupMenu</a>* popup;
|
|
popup = new <a href="tqpopupmenu.html">TQPopupMenu</a>( this );
|
|
popup-><a href="tqmenudata.html#insertItem">insertItem</a>( "&Quit", tqApp, TQ_SLOT(<a href="ntqapplication.html#quit">quit</a>()) );
|
|
menubar-><a href="tqmenudata.html#insertItem">insertItem</a>( "&File", popup );
|
|
|
|
// ...and tell the layout about it.
|
|
<a name="x539"></a> topLayout-><a href="ntqlayout.html#setMenuBar">setMenuBar</a>( menubar );
|
|
|
|
// Make an hbox that will hold a row of buttons.
|
|
<a href="qboxlayout.html">TQBoxLayout</a> *buttons = new <a href="qhboxlayout.html">TQHBoxLayout</a>( topLayout );
|
|
int i;
|
|
for ( i = 1; i <= 4; i++ ) {
|
|
<a href="ntqpushbutton.html">TQPushButton</a>* but = new <a href="ntqpushbutton.html">TQPushButton</a>( this );
|
|
<a href="tqstring.html">TQString</a> s;
|
|
<a name="x542"></a> s.<a href="tqstring.html#sprintf">sprintf</a>( "Button %d", i );
|
|
<a name="x530"></a> but-><a href="ntqbutton.html#setText">setText</a>( s );
|
|
|
|
// Set horizontal <a href="layout.html#stretch-factor">stretch factor</a> to 10 to let the buttons
|
|
// stretch horizontally. The buttons will not stretch
|
|
// vertically, since bigWidget below will take up vertical
|
|
// stretch.
|
|
<a name="x529"></a> buttons-><a href="qboxlayout.html#addWidget">addWidget</a>( but, 10 );
|
|
// (Actually, the result would have been the same with a
|
|
// stretch factor of 0; if no items in a layout have non-zero
|
|
// stretch, the space is divided equally between members.)
|
|
}
|
|
|
|
// Make another hbox that will hold a left-justified row of buttons.
|
|
<a href="qboxlayout.html">TQBoxLayout</a> *buttons2 = new <a href="qhboxlayout.html">TQHBoxLayout</a>( topLayout );
|
|
|
|
<a href="ntqpushbutton.html">TQPushButton</a>* but = new <a href="ntqpushbutton.html">TQPushButton</a>( "Button five", this );
|
|
buttons2-><a href="qboxlayout.html#addWidget">addWidget</a>( but );
|
|
|
|
but = new <a href="ntqpushbutton.html">TQPushButton</a>( "Button 6", this );
|
|
buttons2-><a href="qboxlayout.html#addWidget">addWidget</a>( but );
|
|
|
|
// Fill up the rest of the hbox with stretchable space, so that
|
|
// the buttons get their minimum width and are pushed to the left.
|
|
<a name="x528"></a> buttons2-><a href="qboxlayout.html#addStretch">addStretch</a>( 10 );
|
|
|
|
// Make a big widget that will grab all space in the middle.
|
|
<a href="ntqmultilineedit.html">TQMultiLineEdit</a> *bigWidget = new <a href="ntqmultilineedit.html">TQMultiLineEdit</a>( this );
|
|
bigWidget-><a href="tqtextedit.html#setText">setText</a>( "This widget will get all the remaining space" );
|
|
<a name="x531"></a> bigWidget-><a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( TQFrame::Panel | TQFrame::Plain );
|
|
|
|
// Set vertical stretch factor to 10 to let the bigWidget stretch
|
|
// vertically. It will stretch horizontally because there are no
|
|
// widgets beside it to take up horizontal stretch.
|
|
// topLayout-><a href="qboxlayout.html#addWidget">addWidget</a>( bigWidget, 10 );
|
|
topLayout-><a href="qboxlayout.html#addWidget">addWidget</a>( bigWidget );
|
|
|
|
// Make a grid that will hold a vertical table of TQLabel/TQLineEdit
|
|
// pairs next to a large TQMultiLineEdit.
|
|
|
|
// Don't use hard-coded row/column numbers in TQGridLayout, you'll
|
|
// regret it when you have to change the layout.
|
|
const int numRows = 3;
|
|
const int labelCol = 0;
|
|
const int linedCol = 1;
|
|
const int multiCol = 2;
|
|
|
|
// Let the grid-layout have a spacing of 10 pixels between
|
|
// widgets, overriding the default from topLayout.
|
|
<a href="qgridlayout.html">TQGridLayout</a> *grid = new <a href="qgridlayout.html">TQGridLayout</a>( topLayout, 0, 0, 10 );
|
|
int row;
|
|
|
|
for ( row = 0; row < numRows; row++ ) {
|
|
<a href="ntqlineedit.html">TQLineEdit</a> *ed = new <a href="ntqlineedit.html">TQLineEdit</a>( this );
|
|
// The line edit goes in the second column
|
|
<a name="x533"></a> grid-><a href="qgridlayout.html#addWidget">addWidget</a>( ed, row, linedCol );
|
|
|
|
// Make a label that is a buddy of the line edit
|
|
<a href="tqstring.html">TQString</a> s;
|
|
s.<a href="tqstring.html#sprintf">sprintf</a>( "Line &%d", row+1 );
|
|
<a href="tqlabel.html">TQLabel</a> *label = new <a href="tqlabel.html">TQLabel</a>( ed, s, this );
|
|
// The label goes in the first column.
|
|
grid-><a href="qgridlayout.html#addWidget">addWidget</a>( label, row, labelCol );
|
|
}
|
|
|
|
// The multiline edit will cover the entire vertical range of the
|
|
// grid (rows 0 to numRows) and stay in column 2.
|
|
|
|
<a href="ntqmultilineedit.html">TQMultiLineEdit</a> *med = new <a href="ntqmultilineedit.html">TQMultiLineEdit</a>( this );
|
|
<a name="x532"></a> grid-><a href="qgridlayout.html#addMultiCellWidget">addMultiCellWidget</a>( med, 0, -1, multiCol, multiCol );
|
|
|
|
// The labels will take the space they need. Let the remaining
|
|
// horizontal space be shared so that the multiline edit gets
|
|
// twice as much as the line edit.
|
|
<a name="x534"></a> grid-><a href="qgridlayout.html#setColStretch">setColStretch</a>( linedCol, 10 );
|
|
grid-><a href="qgridlayout.html#setColStretch">setColStretch</a>( multiCol, 20 );
|
|
|
|
// Add a widget at the bottom.
|
|
<a href="tqlabel.html">TQLabel</a>* sb = new <a href="tqlabel.html">TQLabel</a>( this );
|
|
sb-><a href="tqlabel.html#setText">setText</a>( "Let's pretend this is a status bar" );
|
|
sb-><a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( TQFrame::Panel | TQFrame::Sunken );
|
|
// This widget will use all horizontal space, and have a fixed height.
|
|
|
|
// we should have made a subclass and implemented sizePolicy there...
|
|
<a name="x545"></a><a name="x537"></a> sb-><a href="tqwidget.html#setFixedHeight">setFixedHeight</a>( sb-><a href="tqwidget.html#sizeHint">sizeHint</a>().height() );
|
|
|
|
<a name="x535"></a> sb-><a href="tqlabel.html#setAlignment">setAlignment</a>( AlignVCenter | AlignLeft );
|
|
topLayout-><a href="qboxlayout.html#addWidget">addWidget</a>( sb );
|
|
|
|
<a name="x538"></a> topLayout-><a href="ntqlayout.html#activate">activate</a>();
|
|
}
|
|
|
|
ExampleWidget::~ExampleWidget()
|
|
{
|
|
// All child widgets are deleted by TQt.
|
|
// The top-level layout and all its sub-layouts are deleted by TQt.
|
|
}
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
<a href="ntqapplication.html">TQApplication</a> a( argc, argv );
|
|
|
|
ExampleWidget f;
|
|
a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>(&f);
|
|
f.<a href="tqwidget.html#setCaption">setCaption</a>("TQt Example - Layouts");
|
|
f.<a href="tqwidget.html#show">show</a>();
|
|
|
|
return a.<a href="ntqapplication.html#exec">exec</a>();
|
|
}
|
|
</pre>
|
|
|
|
<p>See also <a href="examples.html">Examples</a>.
|
|
|
|
<!-- eof -->
|
|
<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|