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[править] svgalibscreen.h Example File
qtopiacore/svgalib/svgalibscreen.h

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 #ifndef SVGALIBSCREEN_H
 #define SVGALIBSCREEN_H
 
 #include <QScreen>
 
 #include <vga.h>
 #include <vgagl.h>
 
 class SvgalibScreen : public QScreen
 {
 public:
     SvgalibScreen(int displayId) : QScreen(displayId) {}
     ~SvgalibScreen() {}
 
     bool connect(const QString &amp;displaySpec);
     bool initDevice();
     void shutdownDevice();
     void disconnect();
 
     void setMode(int, int, int) {}
     void blank(bool) {}
 
     void exposeRegion(QRegion r, int changing);
     void blit(const QImage &amp;img, const QPoint &amp;topLeft, const QRegion &amp;region);
     void solidFill(const QColor &amp;color, const QRegion &amp;region);
 
     QWSWindowSurface* createSurface(QWidget *widget) const;
     QWSWindowSurface* createSurface(const QString &amp;key) const;
 
 private:
     GraphicsContext *context;
 };
 
 #endif // SVGALIBSCREEN_H

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Qt 4.3.2