| [190] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|---|
| 2 | <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/extensions/motif/doc/walkthrough.doc:561 -->
|
|---|
| 3 | <html>
|
|---|
| 4 | <head>
|
|---|
| 5 | <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
|---|
| 6 | <title>Using Custom QDialogs</title>
|
|---|
| 7 | <style type="text/css"><!--
|
|---|
| 8 | fn { margin-left: 1cm; text-indent: -1cm; }
|
|---|
| 9 | a:link { color: #004faf; text-decoration: none }
|
|---|
| 10 | a:visited { color: #672967; text-decoration: none }
|
|---|
| 11 | body { background: #ffffff; color: black; }
|
|---|
| 12 | --></style>
|
|---|
| 13 | </head>
|
|---|
| 14 | <body>
|
|---|
| 15 |
|
|---|
| 16 | <table border="0" cellpadding="0" cellspacing="0" width="100%">
|
|---|
| 17 | <tr bgcolor="#E5E5E5">
|
|---|
| 18 | <td valign=center>
|
|---|
| 19 | <a href="index.html">
|
|---|
| 20 | <font color="#004faf">Home</font></a>
|
|---|
| 21 | | <a href="classes.html">
|
|---|
| 22 | <font color="#004faf">All Classes</font></a>
|
|---|
| 23 | | <a href="mainclasses.html">
|
|---|
| 24 | <font color="#004faf">Main Classes</font></a>
|
|---|
| 25 | | <a href="annotated.html">
|
|---|
| 26 | <font color="#004faf">Annotated</font></a>
|
|---|
| 27 | | <a href="groups.html">
|
|---|
| 28 | <font color="#004faf">Grouped Classes</font></a>
|
|---|
| 29 | | <a href="functions.html">
|
|---|
| 30 | <font color="#004faf">Functions</font></a>
|
|---|
| 31 | </td>
|
|---|
| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Using Custom QDialogs</h1>
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 |
|
|---|
| 36 | [ <a href="motif-walkthrough-3.html">Previous: Using Qt Standard Dialogs</a> ]
|
|---|
| 37 | [ <a href="motif-walkthrough.html">Home</a> ]
|
|---|
| 38 | [ <a href="motif-walkthrough-5.html">Next: Using Existing Dialogs with QMotifDialog</a> ]
|
|---|
| 39 | <p> After we have replaced the standard dialogs, we move onto the custom
|
|---|
| 40 | dialogs. This project has a single custom dialog: the <em>Page Edit</em>
|
|---|
| 41 | dialog.
|
|---|
| 42 | <p> Instead of writing the code ourselves, we use <a href="designer-manual.html">Qt Designer</a> to design our dialog.
|
|---|
| 43 | Designing a custom dialog is beyond the scope of
|
|---|
| 44 | this document: see the <a href="designer-manual.html">Qt Designer Manual</a> if you're unfamiliar
|
|---|
| 45 | with Qt's visual design tool.
|
|---|
| 46 | <p> <h2> Replacing the <em>Page Edit</em> Dialog
|
|---|
| 47 | </h2>
|
|---|
| 48 | <a name="1"></a><p> The custom <a href="qdialog.html">QDialog</a> description for the <em>Page Edit</em> dialog is saved
|
|---|
| 49 | as <tt>pageeditdialog.ui</tt>. We add this file to the project file by
|
|---|
| 50 | adding the line
|
|---|
| 51 | <pre>
|
|---|
| 52 | FORMS = pageeditdialog.ui
|
|---|
| 53 | </pre>
|
|---|
| 54 |
|
|---|
| 55 | to the <tt>.pro</tt> file, and regenerate the <tt>Makefile</tt>. The <em>uic</em>
|
|---|
| 56 | utility generates the code for our custom QDialog, which is then
|
|---|
| 57 | compiled and linked into our application. (<em>uic</em> is invoked
|
|---|
| 58 | automatically from makefiles generated from <tt>.pro</tt> files.)
|
|---|
| 59 | <p> We need to pass the top-level <a href="qmotifwidget.html">QMotifWidget</a> as the <em>client_data</em>
|
|---|
| 60 | argument to the <tt>EditPage</tt> function, which we will use as the parent
|
|---|
| 61 | for our new <tt>PageEditDialog</tt>. We do this the same way as we have
|
|---|
| 62 | done for the <em>Open</em> and <em>Save As</em> dialogs in <tt>todo.cpp</tt>.
|
|---|
| 63 | <p>
|
|---|
| 64 |
|
|---|
| 65 | <p> <pre></pre>
|
|---|
| 66 | <p> The <tt>EditPage()</tt> function is implemented in <tt>actions.cpp</tt>. We start
|
|---|
| 67 | by adding the includes needed for the <tt>PageEditDialog</tt> and <a href="qlineedit.html">QLineEdit</a>.
|
|---|
| 68 | <p>
|
|---|
| 69 |
|
|---|
| 70 | <p> <pre></pre>
|
|---|
| 71 | <p> In the <tt>EditPage()</tt> function, We create the <tt>PageEditDialog</tt>, set
|
|---|
| 72 | the initial values of the three QLineEdit widgets with values from the
|
|---|
| 73 | current page and execute the dialog.
|
|---|
| 74 | <p> <pre></pre><pre>
|
|---|
| 75 | ...
|
|---|
| 76 | </pre>
|
|---|
| 77 |
|
|---|
| 78 | <p> At this point in the code, the page properties should be modified. The
|
|---|
| 79 | code to do this is in the <tt>DoEditPage()</tt> function. We move the
|
|---|
| 80 | contents of <tt>DoEditPage()</tt> to this point and remove the <tt>DoEditPage()</tt> function completely.
|
|---|
| 81 | <p> The <tt>Page</tt> struct defined in <tt>page.h</tt> stores strings in <tt>char*</tt>
|
|---|
| 82 | arrays. Since the PageEditDialog and the data it contains will be
|
|---|
| 83 | destroyed when we return from this function, we need to convert the
|
|---|
| 84 | unicode <a href="qstring.html">QString</a> data into a <a href="qcstring.html">QCString</a> in the local encoding and
|
|---|
| 85 | duplicate it with <a href="qcstring.html#qstrdup">qstrdup</a>().
|
|---|
| 86 | <p> <pre></pre>
|
|---|
| 87 | <p> The same process must be done for the minorTab text:
|
|---|
| 88 | <p> <pre></pre>
|
|---|
| 89 | <p> ... and for the majorTab text:
|
|---|
| 90 | <p> <pre></pre>
|
|---|
| 91 | <p> [ <a href="motif-walkthrough-3.html">Previous: Using Qt Standard Dialogs</a> ]
|
|---|
| 92 | [ <a href="motif-walkthrough.html">Home</a> ]
|
|---|
| 93 | [ <a href="motif-walkthrough-5.html">Next: Using Existing Dialogs with QMotifDialog</a> ]
|
|---|
| 94 | <p>
|
|---|
| 95 | <!-- eof -->
|
|---|
| 96 | <p><address><hr><div align=center>
|
|---|
| 97 | <table width=100% cellspacing=0 border=0><tr>
|
|---|
| 98 | <td>Copyright © 2007
|
|---|
| 99 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|---|
| 100 | <td align=right><div align=right>Qt 3.3.8</div>
|
|---|
| 101 | </table></div></address></body>
|
|---|
| 102 | </html>
|
|---|
