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PC World Komputer 1998 May
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Pcwk5b98.iso
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Borland
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Cplus45
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BC45
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SCROLLER.PAK
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SCROLLEX.CPP
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C/C++ Source or Header
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1995-08-29
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2KB
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62 lines
//----------------------------------------------------------------------------
// ObjectWindows - (C) Copyright 1991, 1993 by Borland International
//----------------------------------------------------------------------------
#include <owl\owlpch.h>
#include <owl\applicat.h>
#include <owl\framewin.h>
#include <owl\scroller.h>
#include <owl\dc.h>
class TScrollWindow : public TFrameWindow {
public:
TScrollWindow(const char* title);
void Paint(TDC& dc, BOOL, TRect&);
};
//
// Constructor for a TScrollWindow, sets scroll styles and
// constructs the Scroller object.
//
TScrollWindow::TScrollWindow(const char* title)
: TWindow(0, title),
TFrameWindow(0, title)
{
Attr.Style |= WS_VSCROLL | WS_HSCROLL;
Scroller = new TScroller(this, 7, 16, 80, 60);
}
//
// Responds to an incoming "paint" message by redrawing boxes. Note
// that the Scroller's BeginView method, which sets the viewport origin
// relative to the present scroll position, has already been called.
//
void
TScrollWindow::Paint(TDC& dc, BOOL, TRect&)
{
for (int i = 0; i <= 49; i++) {
int x = 10 + i*8;
int y = 30 + i*5;
int w = x;
int h = y * 2;
// if (Scroller->IsVisibleRect((x-Scroller->XUnit/2)/Scroller->XUnit,
// (y-Scroller->YUnit/2)/Scroller->YUnit,
// (w+Scroller->XUnit/2)/Scroller->XUnit,
// (h+Scroller->YUnit/2)/Scroller->YUnit))
dc.Rectangle(x, y, x+w, y+h);
}
}
//----------------------------------------------------------------------------
class TScrollApp : public TApplication {
public:
TScrollApp() : TApplication("ScrollApp") {}
void InitMainWindow() {MainWindow = new TScrollWindow("Boxes");}
};
int
OwlMain(int /*argc*/, char* /*argv*/ [])
{
return TScrollApp().Run();
}