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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Toolkit - trivial/trivial.cpp example file</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: white; color: black; }--></style></head><body bgcolor="#ffffff"><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><h1 align=center>Very Trivial Example</h1> This example is extremely trivial, and thus useful for investigating problems you might have installing the extension. <p> To build the example, you must first build the <a href=nsplugin.html>Qt Netscape Plugin Extension</a> library. Then type <tt>make</tt> in <tt>extensions/nsplugin/examples/trivial/</tt> and copy the resulting <tt>trivial.so</tt> or <tt>nptrivial.dll</tt> to the Plugins directory of your WWW browser. <p> <EMBED TYPE=trivial/very WIDTH=100 HEIGHT=100><pre>// Qt stuff#include "<a name="qnp.h"></a><a href="qnp-h.html">qnp.h</a>"#include <<a name="qpainter.h"></a><a href="qpainter-h.html">qpainter.h</a>>#include <<a name="qmessagebox.h"></a><a href="qmessagebox-h.html">qmessagebox.h</a>>class Trivial : public QNPWidget { Q_OBJECTpublic: void mouseReleaseEvent(<a name="QMouseEvent"></a><a href="qmouseevent.html">QMouseEvent</a>* event) { <a name="QMessageBox::aboutQt"></a><a href="qmessagebox.html#b72270">QMessageBox::aboutQt</a>(this); } void paintEvent(<a name="QPaintEvent"></a><a href="qpaintevent.html">QPaintEvent</a>* event) { <a name="QPainter"></a><a href="qpainter.html">QPainter</a> p(this); p.<a name="setClipRect"></a><a href="qpainter.html#898839">setClipRect</a>(event-><a name="rect"></a><a href="qpaintevent.html#2d6e18">rect</a>()); int w = width(); p.<a name="drawRect"></a><a href="qpainter.html#4c0077">drawRect</a>(rect()); p.<a name="drawText"></a><a href="qpainter.html#0f088f">drawText</a>(w/8, 0, w-w/4, height(), AlignCenter|WordBreak, "Trivial!"); }};class TrivialInstance : public QNPInstance { Q_OBJECTpublic: <a name="QNPWidget"></a><a href="qnpwidget.html">QNPWidget</a>* newWindow() { return new Trivial; } void print(<a href="qpainter.html">QPainter</a>* p) { p-><a href="qpainter.html#0f088f">drawText</a>(0,0,"Hello"); }};class TrivialPlugin : public QNPlugin {public: <a name="QNPInstance"></a><a href="qnpinstance.html">QNPInstance</a>* newInstance() { return new TrivialInstance; } const char* getMIMEDescription() const { return "trivial/very:xxx:Trivial and useless"; } const char * getPluginNameString() const { return "Trivial Qt-based Plugin"; } const char * getPluginDescriptionString() const { return "A Qt-based LiveConnected plug-in that does nothing"; }};<a name="QNPlugin"></a><a href="qnplugin.html">QNPlugin</a>* QNPlugin::create(){ return new TrivialPlugin;}#include "trivial.moc"</pre><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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