button.c

《嵌入式Linux应用开发详解》中的源代码

#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     128
#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, 
                hChildWnd5, hChildWnd6, hChildWnd7, hChildWnd8;

    switch (message) {
        case MSG_CREATE:
            hChildWnd1 = CreateWindow ("button", 
                                        "确定", 
                                        WS_CHILD 
                                        | BS_DEFPUSHBUTTON
                                        | WS_VISIBLE, 
                                        IDC_CTRL1, 
                                        10, 20, 80, 30, hWnd, 0);

            hChildWnd4 = CreateWindow ("button", 
                                        "取消", 
                                        WS_CHILD
                                        | BS_PUSHBUTTON
                                        | WS_VISIBLE, 
                                        IDC_CTRL4, 
                                        100, 20, 80, 30, hWnd, 0);

            hChildWnd2 = CreateWindow ("button", 
                                        "复选框", 
                                        WS_CHILD | BS_AUTOCHECKBOX 
                                        | BS_LEFTTEXT | BS_RIGHT
                                        | WS_VISIBLE, 
                                        IDC_CTRL2, 
                                        100, 60, 100, 30, hWnd, 0);

            hChildWnd3 = CreateWindow ("button", 
                                        "单选钮", 
                                        WS_CHILD | BS_AUTORADIOBUTTON
                                        | WS_VISIBLE | WS_GROUP,
                                        IDC_CTRL3,
                                        10, 60, 100, 30, hWnd, 0);
            hChildWnd5 = CreateWindow ("button", 
                                        "单选钮", 
                                        WS_CHILD | BS_AUTORADIOBUTTON
                                        | WS_VISIBLE,
                                        IDC_CTRL3 + 1,
                                        10, 100, 100, 30, hWnd, 0);
            hChildWnd6 = CreateWindow ("button", 
                                        "单选钮", 
                                        WS_CHILD | BS_AUTORADIOBUTTON
                                        | WS_VISIBLE,
                                        IDC_CTRL3 + 2,
                                        10, 140, 100, 30, hWnd, 0);
            EnableWindow (hChildWnd6, FALSE);

          /*  hChildWnd7 = CreateWindow ("button", 
                                        "按钮1", 
                                        WS_CHILD | BS_PUSHBUTTON | WS_VISIBLE, 
                                        IDC_CTRL4 + 10, 
                                        10, 160, 60, 30, hWnd, 0);
            hChildWnd8 = CreateWindow ("button", 
                                        "按纽2", 
                                        WS_CHILD | BS_PUSHBUTTON | WS_VISIBLE, 
                                        IDC_CTRL4 + 20, 
                                        100, 160, 60, 30, hWnd, 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_CTRL4:
                    PostMessage (hWnd, MSG_CLOSE, 0, 0);
                break;
                
                default:
                break;
            }

            ReleaseDC (hdc);
        }
        break;
       
        case MSG_CLOSE:
            DestroyWindow (hChildWnd1);
            DestroyWindow (hChildWnd2);
            DestroyWindow (hChildWnd3);
            DestroyWindow (hChildWnd4);
            DestroyWindow (hChildWnd5);
            DestroyWindow (hChildWnd6);
            DestroyWindow (hChildWnd7);
            DestroyWindow (hChildWnd8);
            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_NONE;
    pCreateInfo->spCaption = "Button control";
    pCreateInfo->hMenu = 0;
    pCreateInfo->hCursor = GetSystemCursor(1);
    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 button_demo (HWND hwnd)
{
    MAINWINCREATE CreateInfo;

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

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

    hMainWnd = CreateMainWindow (&CreateInfo);
}