combobox.c

小超 @ 2004-11-19 11:14

#include
#include
#include

#include
#include
#include
#include
#include

#define IDC_BOX1        100
#define IDC_BOX2        200
#define IDC_BOX3        300
#define IDC_BOX4        400
#define IDC_BOX5        500

#define IDC_SELECTED    600

static HWND hMainWnd = HWND_INVALID;

static void create_combobox (HWND parent)
{
   int i;
   HWND hwnd1, hwnd2, hwnd3, hwnd4;
   char temp[20];
   DIR*    dir;
   struct  dirent* dir_ent;

   hwnd1 = CreateWindow (CTRL_COMBOBOX,
           "combobox",
           WS_VISIBLE | CBS_DROPDOWNLIST | CBS_NOTIFY | CBS_READONLY,
           IDC_BOX1,
           10, 10, 180, 24,
           parent, 100);

   hwnd2 = CreateWindow (CTRL_COMBOBOX,
           "combobox",
           WS_VISIBLE | CBS_SPINLIST | WS_TABSTOP | CBS_SORT,
           IDC_BOX2,
           10, 40, 180, 24,
           parent, 0);

   hwnd3 = CreateWindow (CTRL_COMBOBOX,
           "0",
           WS_VISIBLE | CBS_AUTOSPIN | WS_TABSTOP,
           IDC_BOX3,
           10, 70, 180, 24,
           parent, 0);

   hwnd4 = CreateWindow (CTRL_COMBOBOX,
           "0",
           WS_VISIBLE | CBS_SIMPLE | CBS_SORT | WS_TABSTOP,
           IDC_BOX4,
           10, 100, 180, 24,
           parent, 100);

   dir = opendir ("./");
   while ( (dir_ent = readdir ( dir )) != NULL ) {
       SendMessage (hwnd1, CB_ADDSTRING, 0, (LPARAM)dir_ent->d_name);
       SendMessage (hwnd4, CB_ADDSTRING, 0, (LPARAM)dir_ent->d_name);
   }
   closedir (dir);

   for (i = 0; i < 1000; i++) {
       sprintf (temp, "Welcome: %03d", i);
       SendMessage (hwnd2, CB_ADDSTRING, 0, (LPARAM)temp);
   }

}

static int ControlTestWinProc(HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
   switch (message) {
       case MSG_CREATE:
             create_combobox (hWnd);

             CreateWindow (CTRL_STATIC,
                       "selected",
                       WS_CHILD | WS_VISIBLE | SS_SIMPLE,
                       IDC_SELECTED,
                       210, 10, 200, 25, hWnd, 0);

             CreateWindow (CTRL_BUTTON,
                       "Close",
                       WS_CHILD | WS_VISIBLE,
                       IDCANCEL,
                       280, 200, 60, 25, hWnd, 0);

       break;

       case MSG_COMMAND:
       {
           int id   = LOWORD(wParam);
           int code = HIWORD(wParam);
           char str [NAME_MAX + 20], file [NAME_MAX + 1];
           int selected;

           if (wParam == IDCANCEL) {
               PostMessage (hWnd, MSG_CLOSE, 0, 0);
               break;
           }

           switch (id) {
           case IDC_BOX1:
               if (code != CBN_SELCHANGE)
                   break;

               selected = SendDlgItemMessage (hWnd, IDC_BOX1, CB_GETCURSEL,0,0);
               if (selected >= 0) {
                   SendDlgItemMessage (hWnd, IDC_BOX1, CB_GETLBTEXT, selected, (LPARAM)file);
                   if (strlen (file)) {
                       sprintf (str, "Selected: %s", file);
                       SetDlgItemText (hWnd, IDC_SELECTED, str);
                   }
               }
               break;
           }

       }
       break;

       case MSG_DESTROY:
           DestroyAllControls (hWnd);
           hMainWnd = HWND_INVALID;
           return 0;

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

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

static void InitCreateInfo(PMAINWINCREATE pCreateInfo)
{
   pCreateInfo->dwStyle = WS_CAPTION | WS_BORDER | WS_VISIBLE;
   pCreateInfo->dwExStyle = WS_EX_NONE;
   pCreateInfo->spCaption = "ComboBox controls";
   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 = 280;
   pCreateInfo->iBkColor = GetWindowElementColor (BKC_CONTROL_DEF);
   pCreateInfo->dwAddData = 0;
   pCreateInfo->hHosting = HWND_DESKTOP;
}

void combobox_demo (HWND hwnd)
{
   MAINWINCREATE CreateInfo;

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

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

   hMainWnd = CreateMainWindow (&CreateInfo);
}