<!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/extensions/motif/doc/walkthrough.doc:561 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Using Custom TQDialogs</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>Using Custom TQDialogs</h1> [ <a href="motif-walkthrough-3.html">Previous: Using TQt Standard Dialogs</a> ] [ <a href="motif-walkthrough.html">Home</a> ] [ <a href="motif-walkthrough-5.html">Next: Using Existing Dialogs with TQMotifDialog</a> ] <p> After we have replaced the standard dialogs, we move onto the custom dialogs. This project has a single custom dialog: the <em>Page Edit</em> dialog. <p> Instead of writing the code ourselves, we use <a href="designer-manual.html">TQt Designer</a> to design our dialog. Designing a custom dialog is beyond the scope of this document: see the <a href="designer-manual.html">TQt Designer Manual</a> if you're unfamiliar with TQt's visual design tool. <p> <h2> Replacing the <em>Page Edit</em> Dialog </h2> <a name="1"></a><p> The custom <a href="ntqdialog.html">TQDialog</a> description for the <em>Page Edit</em> dialog is saved as <tt>pageeditdialog.ui</tt>. We add this file to the project file by adding the line <pre> FORMS = pageeditdialog.ui </pre> to the <tt>.pro</tt> file, and regenerate the <tt>Makefile</tt>. The <em>uic</em> utility generates the code for our custom TQDialog, which is then compiled and linked into our application. (<em>uic</em> is invoked automatically from makefiles generated from <tt>.pro</tt> files.) <p> We need to pass the top-level <a href="qmotifwidget.html">TQMotifWidget</a> as the <em>client_data</em> argument to the <tt>EditPage</tt> function, which we will use as the parent for our new <tt>PageEditDialog</tt>. We do this the same way as we have done for the <em>Open</em> and <em>Save As</em> dialogs in <tt>todo.cpp</tt>. <p> <p> <pre></pre> <p> The <tt>EditPage()</tt> function is implemented in <tt>actions.cpp</tt>. We start by adding the includes needed for the <tt>PageEditDialog</tt> and <a href="ntqlineedit.html">TQLineEdit</a>. <p> <p> <pre></pre> <p> In the <tt>EditPage()</tt> function, We create the <tt>PageEditDialog</tt>, set the initial values of the three TQLineEdit widgets with values from the current page and execute the dialog. <p> <pre></pre><pre> ... </pre> <p> At this point in the code, the page properties should be modified. The code to do this is in the <tt>DoEditPage()</tt> function. We move the contents of <tt>DoEditPage()</tt> to this point and remove the <tt>DoEditPage()</tt> function completely. <p> The <tt>Page</tt> struct defined in <tt>page.h</tt> stores strings in <tt>char*</tt> arrays. Since the PageEditDialog and the data it contains will be destroyed when we return from this function, we need to convert the unicode <a href="ntqstring.html">TQString</a> data into a <a href="ntqcstring.html">TQCString</a> in the local encoding and duplicate it with <a href="ntqcstring.html#qstrdup">tqstrdup</a>(). <p> <pre></pre> <p> The same process must be done for the minorTab text: <p> <pre></pre> <p> ... and for the majorTab text: <p> <pre></pre> <p> [ <a href="motif-walkthrough-3.html">Previous: Using TQt Standard Dialogs</a> ] [ <a href="motif-walkthrough.html">Home</a> ] [ <a href="motif-walkthrough-5.html">Next: Using Existing Dialogs with TQMotifDialog</a> ] <p> <!-- 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>