simple.c

A simple Task Manager style application, ideal for PPC, but also runs on HPC units.

/*

	TaskCE - A simple CE Task Manager 

	TARGET OS:				CE 2.x
	TARGET FORM FACTOR:		PPC, HPC
	DESCRIPTION:
		A simple Task Manager style application, ideal for PPC, but
		also runs well on HPC units.
         

*/

#include <windows.h>
#include <tchar.h> //if you're using strings of any kind
#include "resource.h" //auto-created header courtesy of MS Dev Studio

BOOL CALLBACK DlgProc (HWND, UINT, WPARAM, LPARAM) ;

//-------------------------------------------------------------------
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, 
                    LPSTR lpszCmdLine, int cmdShow)       
{
     DialogBox ((HANDLE) hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, (DLGPROC)DlgProc);
     return 0 ;
}

//-------------------------------------------------------------------
BOOL CALLBACK DlgProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{
     switch (uMsg)
     {
          case WM_INITDIALOG:
          {
               SendMessage(hwnd, WM_USER + 200, 0, 0);
               return TRUE;
          }
          case WM_CTLCOLORDLG:
          {
               //SetBkColor((HDC)wParam, LTGRAY_BRUSH);
               SendMessage(hwnd, WM_USER + 200, 0, 0);
               return FALSE;
          }
          case WM_USER + 200:
          {
               HWND hWndAWindow;
		     TCHAR szBuff[MAX_PATH];
		     HWND hwndCtrl = GetDlgItem (hwnd, IDC_LISTTASKS);
               INT iSelfCount; //how many instances of this program are there? 
               //always clear out list box first!!
               SendMessage(hwndCtrl, LB_RESETCONTENT, 0, 0);
     	     hWndAWindow = GetWindow(hwnd, GW_HWNDFIRST);
		     while (hWndAWindow != 0)
		     {
		          if ((hWndAWindow != hwnd) && IsWindowVisible(hWndAWindow) &&
				     (GetWindow(hWndAWindow, GW_OWNER) == 0) &&
				     (GetWindowText(hWndAWindow, szBuff, MAX_PATH) != 0) &&
                         (lstrcmpi (szBuff, TEXT("Desktop")) != 0))
	     			     SendMessage(hwndCtrl, LB_ADDSTRING, 0, (LPARAM) (LPCTSTR) szBuff);
			     hWndAWindow = GetWindow(hWndAWindow, GW_HWNDNEXT);
		     }
		     return TRUE ;
          }
          case WM_CLOSE:
          case WM_HIBERNATE:
          {
               EndDialog(hwnd, 0);
               return TRUE;
          }
          case WM_COMMAND:
          {
               switch(LOWORD(wParam))
               {
                    case IDCANCEL:
                    case IDOK:
                    {
                         EndDialog(hwnd, 0);
                         return TRUE;
                    }
                    case IDC_ENDTASK:
                    case IDC_SWITCHTO:
                    {
                         //first, make sure the window still exists by trying to find it.
                         int         cbCnt; 
                         TCHAR       szBuff[MAX_PATH]; 
                         HWND hWndAWindow;
                         cbCnt = (int)SendMessage(GetDlgItem(hwnd, IDC_LISTTASKS), LB_GETCURSEL, 0, 0L); 
                         if ((cbCnt < 0))
                         { 
                              MessageBox(hwnd, TEXT("You must first select a task."), TEXT("Error: No task"), MB_OK | MB_ICONSTOP);
                              return TRUE; 
                         } 
                         //SendMessage(hwnd, LB_GETSELITEMS, cbCnt, (LPARAM)(int FAR *)xSel); 
                         SendMessage(GetDlgItem(hwnd, IDC_LISTTASKS), 
                              LB_GETTEXT, 
                              (WPARAM)SendMessage(GetDlgItem(hwnd, IDC_LISTTASKS), LB_GETCURSEL, 0, 0L),
                              (LPARAM)(LPSTR)szBuff);                          
                         if (FindWindow(NULL, szBuff) != NULL) //the window still exists!
                         {
                              hWndAWindow = FindWindow(NULL, szBuff);
                              SetForegroundWindow(hWndAWindow);
                              if (LOWORD(wParam) == IDC_ENDTASK)
                              {                                  
                                   SendMessage(hWndAWindow, WM_CLOSE, 0, 0);
                              }
                              SendMessage(hwnd, WM_CLOSE, 0, 0);
                              return TRUE;
                         }
                         else //if you didn't find the app, it's time to refresh yourself
                              SendMessage(hwnd, WM_USER + 200, 0, 0);
                         break ;
                    }

               }
          }
          default:
               return FALSE;
     }
}