Usage

Table of Contents

• Hello World

Hello World

Lets start with getting neoWidgets to run at all. The following code is the most barebones program which just starts a message loop and creates a window with some text in it. This should be a good example for how we do things here.

#include "neo\neo.h"
using namespace neo;

class HelloNeo : public Window
{
public:
    HelloNeo()
    {
        // set a message handler
        Bind(WM_DESTROY, &HelloNeo::OnDestroy, this);
        // create the window
        Create(WindowParam().Style(WS_OVERLAPPEDWINDOW)
            .InnerSize(300, 300)
            .Text(L"Hello World!"));

        // create a control for this window
        // NOTE: the control lives on even when this StaticCtrl instance goes out of scope
        // because all controls are in lightweight mode
        StaticCtrl(*this, _T("Hello World!"), Rect(5, 5, 200, 25)).Shrink();
        // window was hidden until now
        Show();
    }

    void OnDestroy(Message& m)
    {
        // quit the app
        PostQuitMessage(0);
    }
};

int WINAPI WinMain(HINSTANCE instance, HINSTANCE prevInstance, LPSTR cmdLine, int cmdShow)
{
    InitCommonControls();

    // create main window
    HelloNeo main;

    // run message loop
    MSG msg;
    while(GetMessage(&msg, 0, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return msg.wParam;
}