129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
#include <stdlib.h>
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#define INCL_WIN
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#define INCL_GPI
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#include <os2.h>
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int SizeX;
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int SizeY;
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HWND FrameHandle;
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HMQ hMessageQueue;
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HAB AnchorBlock;
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static int Random( int high )
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{
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return( ( (double)rand() / 32767 ) * high );
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}
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static void NewColor( HPS ps )
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{
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GpiSetColor( ps, Random( 15 ) + 1 );
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}
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/* Draw a rectangular shape of random size and color at random position */
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static void DrawEllipse(HWND hwndWindow)
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{
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POINTL ptl;
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HPS ps;
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static int Odd = 0;
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int parm1,parm2;
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ps = WinGetPS( hwndWindow );
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ptl.x = Random( SizeX );
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ptl.y = Random( SizeY );
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GpiMove( ps, &ptl );
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ptl.x = Random( SizeX );
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ptl.y = Random( SizeY );
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parm1 = Random( 50 );
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parm2 = Random( 50 );
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if( Random( 10 ) >= 5 ) {
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NewColor( ps );
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GpiBox( ps, DRO_FILL, &ptl, 0, 0 );
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NewColor( ps );
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GpiBox( ps, DRO_OUTLINE, &ptl, 0, 0 );
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} else {
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NewColor( ps );
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GpiBox( ps, DRO_FILL, &ptl, parm1, parm2 );
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NewColor( ps );
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GpiBox( ps, DRO_OUTLINE, &ptl, parm1, parm2 );
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}
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Odd++;
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Odd &= 1;
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WinReleasePS( ps );
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}
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/* Client window procedure */
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MRESULT EXPENTRY MainDriver( HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2 )
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{
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HPS ps;
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RECTL rcl;
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switch( msg ) {
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case WM_CREATE:
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/* Start a 150ms timer on window creation */
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WinStartTimer( AnchorBlock, hwnd, 1, 150 ) ;
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break;
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case WM_TIMER:
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/* Draw another ellipse on each timer tick */
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DrawEllipse( hwnd );
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return( 0 );
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case WM_SIZE:
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/* Remember new dimensions when window is resized */
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SizeX = SHORT1FROMMP( mp2 );
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SizeY = SHORT2FROMMP( mp2 );
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return( 0 );
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case WM_PAINT:
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/* Handle paint events */
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ps = WinBeginPaint( hwnd, NULL, NULL );
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WinQueryWindowRect( hwnd, &rcl );
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WinFillRect( ps, &rcl, CLR_WHITE );
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WinEndPaint( ps );
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return( 0 );
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}
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/* Let the default window procedure handle all other messages */
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return( WinDefWindowProc( hwnd, msg, mp1, mp2 ) );
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}
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int main()
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{
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ULONG style;
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QMSG qmsg;
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HWND WinHandle;
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/* Initialize windowing and create message queue */
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AnchorBlock = WinInitialize( 0 );
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if( AnchorBlock == 0 ) return( 0 );
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hMessageQueue = WinCreateMsgQueue( AnchorBlock, 0 );
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if( hMessageQueue == 0 ) return( 0 );
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/* Register window class */
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if( !WinRegisterClass( AnchorBlock, "Watcom", (PFNWP)MainDriver,
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CS_SIZEREDRAW, 0 ) ) {
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return( 0 );
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}
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/* Create frame and client windows */
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style = FCF_TITLEBAR | FCF_SYSMENU | FCF_SIZEBORDER | FCF_MINMAX |
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FCF_SHELLPOSITION | FCF_TASKLIST;
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FrameHandle = WinCreateStdWindow( HWND_DESKTOP, WS_VISIBLE, &style,
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"Watcom",
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"Shapes - C sample",
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0, NULL, 0, &WinHandle );
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/* If window creation failed, exit immediately! */
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if( FrameHandle == 0 ) return( 0 );
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/* Message loop */
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while( WinGetMsg( AnchorBlock, &qmsg, NULL, 0, 0 ) ) {
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WinDispatchMsg( AnchorBlock, &qmsg );
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}
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/* Shut down and clean up */
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WinDestroyWindow( FrameHandle );
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WinDestroyMsgQueue( hMessageQueue );
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WinTerminate( AnchorBlock );
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return( 1 );
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}
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