PALM OS上的入门列子Hello world 02
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- UID
- 872238
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PALM OS上的入门列子Hello world 02
# Dependency targets
hello.o: hello.c resource.h
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文件：resource.h
#define MainMenu 1000
#define HelpMenuAbout 1010
#define HelloForm 1100
#define AboutAlert 2000
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文件：hello.rcp
#include "resource.h"
VERSION ID 1 "1.00"
////////////////////////////////////////////////////////////////////////
// Main menu
MENU ID MainMenu
BEGIN
PULLDOWN "Help"
BEGIN
MENUITEM "About..." ID HelpMenuAbout
END
END
////////////////////////////////////////////////////////////////////////
// "Hello, world!" form
FORM HelloForm AT (0 0 160 160)
MENUID MainMenu
USABLE
BEGIN
LABEL "Hello, world!" AUTOID AT (CENTER 50)
END
////////////////////////////////////////////////////////////////////////
// About box
ALERT ID AboutAlert
BEGIN
TITLE "About..."
MESSAGE "Hello, world! demo app\nVersion 1.00\n\nCopyright \251 2001\nYoyodyne, Inc.\n"
BUTTONS "OK"
END
////////////////////////////////////////////////////////////////////////
// The program's icon
ICON "icon.bmp"
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文件：hello.c
/***********************************************************************
hello.c - Sample "Hello, world!" program for Palm OS. Build with
PRC-Tools 2.0 and Palm OS SDK 3.5 or better.
Created 2001.02.04 by Warren Young
$Revision: 1.3 $ $Date: 2001/02/05 03:34:34 $
This program is hereby placed into the public domain.
***********************************************************************/
#include
#include "resource.h"
////////////////////////////////////////////////////////////////////////
// Globals
// Pointer to the currently-active form
static FormPtr gpForm;
//// StartApplication //////////////////////////////////////////////////
// Called when application is starting
static Err StartApplication()
{
FrmGotoForm(HelloForm);
return 0;
}
//// StopApplication ///////////////////////////////////////////////////
// Called when application is being shut down.
static void StopApplication()
{
FrmCloseAllForms();
}
//// HelloFormEventHandler /////////////////////////////////////////////
// Handle events for the "Hello, world!" form.
Boolean HelloFormEventHandler(EventPtr event)
{
Boolean handled = false;
switch (event->eType) {
case frmOpenEvent: {
gpForm = FrmGetActiveForm();
FrmDrawForm(gpForm);
handled = true;
break;
}
case frmCloseEvent:
FrmEraseForm(gpForm);
FrmDeleteForm(gpForm);
gpForm = 0;
handled = true;
break;
default:
// -Wall warning eater: switch must handle all enum
// elements.
break;
}
return handled;
}
//// ApplicationEventHandler /////////////////////////////////////////////
// Handle global events, and pass form-specific events to each form's
// event handler.
static Boolean ApplicationEventHandler(EventPtr event)
{
Boolean handled = false;
switch (event->eType) {
case frmLoadEvent: {
FormPtr pForm = FrmInitForm(event->data.frmLoad.formID);
FrmSetActiveForm(pForm);
FrmSetEventHandler(pForm, HelloFormEventHandler);
handled = true;
break;
}
case menuEvent:
switch (event->data.menu.itemID) {
case HelpMenuAbout:
FrmAlert(AboutAlert);
break;
}
handled = true;
break;
default:
// -Wall warning eater: switch must handle all enum
// elements.
break;
}
return handled;
}
//// EventLoop /////////////////////////////////////////////////////////
// Global event loop.
static void EventLoop()
{
EventType event;
UInt16 error;
do {
EvtGetEvent(&event, evtWaitForever);
if (!SysHandleEvent(&event)) {
if (!MenuHandleEvent(0, &event, &error)) {
if (!ApplicationEventHandler(&event)) {
FrmDispatchEvent(&event);
}
}
}
}
while (event.eType != appStopEvent);
}
//// PilotMain /////////////////////////////////////////////////////////
// It all starts here...
UInt32 PilotMain(UInt16 launchCode, MemPtr cmdPBP, UInt16 launchFlags)
{
Err err = 0;
if (launchCode == sysAppLaunchCmdNormalLaunch) {
if ((err = StartApplication()) == 0) {
EventLoop();
StopApplication();
}
}
return err;
}
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