From WinDom June 1999

The main different with old version of WinDom and the new one is the Event handling. Before, each window had a set of pointer matching a specific event. For example, the pointer win->redraw matched the WM_REDRAW event. In the new version, you can associate any event to any window (and more :)). For details, reads the EvntAttach() manual.

Old way	New way
win->redraw = redraw;	EvntAttach( win, WM_REDRAW, redraw);
win->destroy = destroy;	EvntAttach( win, WM_DESTROY, destroy);
win->closed = closed;	EvntAttach( win, WM_CLOSED, closed);
win->fulled = fulled;	EvntAttach( win, WM_FULLED, fulled);
win->sized = sized;	EvntAttach( win, WM_SIZED, sized);
win->moved = moved;	EvntAttach( win, WM_MOVED, moved);
win->topped = topped;	EvntAttach( win, WM_TOPPED, topped);
win->untopped = untopped;	EvntAttach( win, WM_UNTOPPED, untopped);
win->iconified = icon;	EvntAttach( win, WM_ICONIFY, icon);
win->uniconified = unicon;	EvntAttach( win, WM_UNICONIFY, unicon);
win->alliconified = allicon;	EvntAttach( win, WM_ALLICONIFY, allicon);
win->hslided = hslided;	EvntAttach( win, WM_HSLID, hslided);
win->vslided = vslided;	EvntAttach( win, WM_VSLID, vslided);

The special case of WM_ARROWED

The WA_UPLINED, WA_DNLINED, WA_LFLINED, WA_RTLINED, WA_UPPAGED, WA_DNPAGED, WA_LFPAGED, WA_RTPAGED are sub messages of the WM_ARROWED message. In the new WinDom version, it is only possible to attach the WM_ARROWED message :

Old way:

win->uppaged = uppage;
win->dnpaged = dnpage;
win->uplined = upline;
win->dnlined = dnline;
win->lfpaged = lfpage;
win->rtpaged = rtpage;
win->lflined = lfline;
win->rtlined = rtline;

EvntAttach( win, WA_ARROWED, arrow);

/* where arrow() is defined by: */

void arrow( WINDOW *win) {
	switch( evnt.buff[4]) {
	case WA_UPPAGED:
		uppage( win); break;
	case WA_DNPAGED:
		dnpage( win); break;
	/* etc ... */
	}
}

This function is obsolet, use the more flexible and generic function ApplWrite(). The calls :

	snd_msg( win, msg, w4, w5, w6, w7);
	snd_msg( NULL, msg, w4, w5, w6, w7);

	ApplWrite( app.id, msg, win->handle, w4, w5, w6, w7);
	ApplWrite( app.id, msg, w4, w5, w6, w7);

	ApplWrite( appl_find( "QED     ", VA_START, "C:\\NEWDESK.INF");

This field in the WINDOW structure has been removed. It is remplaced by the bit WS_FULLSIZE in the status field.

The sequence :

	if( win->fullsize)
		printf( "full screen window);

	if( win->status & WS_FULLSIZE)
		printf( "full screen window);