helloworld.cpp

#include <Types.h>
#include <Dialogs.h>
#include <Windows.h>
#include <Menus.h>
#include <TextEdit.h>
#include <Quickdraw.h>
#include <Events.h>
#include <Resources.h>
#include <Sound.h>

// Function Prototypes
void Initialize();
void EventLoop();
void DoEvent(EventRecord *event);
void HandleMouseDown(EventRecord *event);
void HandleWindowEvent(EventRecord *event);
void DoUpdate(EventRecord *event);

WindowPtr gMainWindow;
Rect buttonRect;

int main() {
    Initialize();
    EventLoop();
    return 0;
}

void Initialize() {
    InitGraf(&qd.thePort);
    InitFonts();
    InitWindows();
    InitMenus();
    TEInit();
    InitDialogs(nil);
    InitCursor();

    // Load resources
    gMainWindow = GetNewWindow(128, nil, (WindowPtr)-1L);
    ShowWindow(gMainWindow);
}

void EventLoop() {
    EventRecord event;
    while (true) {
        if (WaitNextEvent(everyEvent, &event, 60, nil)) {
            DoEvent(&event);
        }
    }
}

void DoEvent(EventRecord *event) {
    switch (event->what) {
        case mouseDown:
            HandleMouseDown(event);
            break;
        case updateEvt:
            DoUpdate(event);
            break;
    }
}

void HandleMouseDown(EventRecord *event) {
    WindowPtr window;
    short part = FindWindow(event->where, &window);
    switch (part) {
        case inContent:
            if (window == gMainWindow) HandleWindowEvent(event);
            break;
        case inDrag:
            DragWindow(window, event->where, &qd.screenBits.bounds);
            break;
    }
}


void HandleWindowEvent(EventRecord *event) {
    Point where = event->where;
    GlobalToLocal(&where);
    buttonRect.top = 50;
    buttonRect.left = 50;
    buttonRect.bottom = 100;
    buttonRect.right = 150;
    // Assuming the button's rectangle is predefined as buttonRect
    if (PtInRect(where, &buttonRect)) {
        // Code to display "Hello"
        SysBeep(10); // Simple feedback
    }
}

void DoUpdate(EventRecord *event) {
    WindowPtr window = (WindowPtr)event->message;
    BeginUpdate(window);
    // Redrawing code here
    EndUpdate(window);
}