MiniGUI/examples/helloworld.c

/*
 * This is a every simple sample for MiniGUI.
 * It will create a main window and display a string of "Hello, world!" in it.
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <minigui/common.h>
#include <minigui/minigui.h>
#include <minigui/gdi.h>
#include <minigui/window.h>

static LRESULT HelloWinProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;

    switch (message) {
        case MSG_PAINT:
            hdc = BeginPaint (hWnd);
            TextOut (hdc, 0, 0, "Hello, world!");
            EndPaint (hWnd, hdc);
        break;

        case MSG_CLOSE:
            DestroyMainWindow (hWnd);
            PostQuitMessage (hWnd);
        return 0;
    }

    return DefaultMainWinProc(hWnd, message, wParam, lParam);
}

static void InitCreateInfo (PMAINWINCREATE pCreateInfo)
{
    pCreateInfo->dwStyle = WS_CAPTION | WS_VISIBLE;
    pCreateInfo->dwExStyle = 0;
    pCreateInfo->spCaption = "Hello, world!" ;
    pCreateInfo->hMenu = 0;
    pCreateInfo->hCursor = GetSystemCursor (0);
    pCreateInfo->hIcon = 0;
    pCreateInfo->MainWindowProc = HelloWinProc;
    pCreateInfo->lx = 0;
    pCreateInfo->ty = 0;
    pCreateInfo->rx = 320;
    pCreateInfo->by = 240;
    pCreateInfo->iBkColor = PIXEL_lightwhite;
    pCreateInfo->dwAddData = 0;
    pCreateInfo->hHosting = HWND_DESKTOP;
}

int MiniGUIMain (int args, const char* arg[])
{
    MSG Msg;
    MAINWINCREATE CreateInfo;
    HWND hMainWnd;

#ifdef _MGRM_PROCESSES
    JoinLayer (NAME_DEF_LAYER, arg[0], 0, 0);
#endif

    InitCreateInfo (&CreateInfo);

    hMainWnd = CreateMainWindow (&CreateInfo);
    if (hMainWnd == HWND_INVALID)
        return -1;

    while (GetMessage (&Msg, hMainWnd)) {
        DispatchMessage (&Msg);
    }

    MainWindowThreadCleanup (hMainWnd);
    return 0;
}