progbar.c

本文件为《嵌入式Linux应用开发详解》一书的配套光盘

#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>
#include <minigui/control.h>

#define IDC_CTRL1     100
#define IDC_CTRL2     110
#define IDC_CTRL3     120
#define IDC_CTRL4     130

static HWND hMainWnd = HWND_INVALID;

static int ControlTestWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
    static HWND hChildWnd1, hChildWnd2, hChildWnd3, hChildWnd4;
    static int pos;

    switch (message) {
        case MSG_CREATE:
            hChildWnd1 = CreateWindow ("progressbar", 
                              "", 
                              WS_VISIBLE, 
                              IDC_CTRL1, 
                              10, 20, 80, 24, hWnd, 0);
            hChildWnd4 = CreateWindow ("progressbar", 
                              "", 
                              WS_VISIBLE, 
                              IDC_CTRL4, 
                              100, 20, 60, 24, hWnd, 0);

            hChildWnd2 = CreateWindow ("progressbar", 
                              NULL, 
                              WS_VISIBLE, 
                              IDC_CTRL2, 
                              10, 45, 250, 24, hWnd, 0);

            hChildWnd3 = CreateWindow ("progressbar", 
                              NULL, 
                              WS_VISIBLE | PBS_VERTICAL | PBS_NOTIFY,
                              IDC_CTRL3,
                              10, 70, 20, 120, hWnd, 0);
            SendMessage (hChildWnd4, PBM_SETRANGE, 0, 1000);
            SendMessage (hChildWnd4, PBM_SETSTEP, 10, 0);
            pos = 0;
            SetTimer (hWnd, 100, 10);
        break;

        case MSG_TIMER:
            pos += 4;
            SendMessage (hChildWnd1, PBM_SETPOS, pos, 0);
            SendMessage (hChildWnd2, PBM_DELTAPOS, 10, 0);
            SendMessage (hChildWnd3, PBM_DELTAPOS, 2, 0);
            SendMessage (hChildWnd4, PBM_STEPIT, 0, 0);
        break;

        case MSG_COMMAND:
        {
            int id   = LOWORD(wParam);
            int code = HIWORD(wParam);
            char buffer [256];
            HDC hdc;

            sprintf (buffer, "ID: %d, Code: %x", id, code);

            hdc = GetClientDC (hWnd);
            TextOut (hdc, 0, 0, buffer);
            
            switch (id)
            {
                case IDC_CTRL1:
                break;
            
                case IDC_CTRL2:
                break;
                
                case IDC_CTRL3:
                break;
                
                default:
                break;
            }

            ReleaseDC (hdc);
        }
        break;
        
        case MSG_CLOSE:
            KillTimer (hWnd, 100);
            DestroyWindow (hChildWnd1);
            DestroyWindow (hChildWnd2);
            DestroyWindow (hChildWnd3);
            DestroyWindow (hChildWnd4);
            DestroyMainWindow (hWnd);
            MainWindowCleanup (hWnd);
            hMainWnd = HWND_INVALID;
        return 0;
    }

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

static void InitCreateInfo(PMAINWINCREATE pCreateInfo)
{
    pCreateInfo->dwStyle = WS_CAPTION | WS_BORDER | WS_MINIMIZEBOX 
                                      | WS_MAXIMIZEBOX
                                      | WS_VISIBLE;
    pCreateInfo->dwExStyle = WS_EX_IMECOMPOSE;
    pCreateInfo->spCaption = "ProgressBar control" ;
    pCreateInfo->hMenu = 0;
    pCreateInfo->hCursor = GetSystemCursor(IDC_ARROW);
    pCreateInfo->hIcon = 0;
    pCreateInfo->MainWindowProc = ControlTestWinProc;
    pCreateInfo->lx = 0; 
    pCreateInfo->ty = 0;
    pCreateInfo->rx = 400;
    pCreateInfo->by = 300;
    pCreateInfo->iBkColor = GetWindowElementColor (BKC_CONTROL_DEF);
    pCreateInfo->dwAddData = 0;
    pCreateInfo->hHosting = HWND_DESKTOP;
}

void progressbar_demo (HWND hwnd)
{
    MAINWINCREATE CreateInfo;

    if (hMainWnd != HWND_INVALID) {
        ShowWindow (hMainWnd, SW_SHOWNORMAL);
        return;
    }

    InitCreateInfo (&CreateInfo);
    CreateInfo.hHosting = hwnd;

    hMainWnd = CreateMainWindow (&CreateInfo);
}