ICONES DU BUREAU EN CERCLE

#include <windows.h>
#include <shellapi.h>
#include <commctrl.h>
#include <math.h>


#define ID_RESET 1001
#define ID_RATIO 1002
#define ID_OK    1003
#define ID_ICON  1004
#define WM_PITASKBAR 2001

/*  Make the class name into a global variable  */
const char szAppName[] = "PosIcons";

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);



/* Variables globales */
int lScreen, hScreen, nIcons;
float actRatio;
HINSTANCE hInst;
HWND hWndMain, hWndReset, hWndRatio, hWndOK, hWndSysListView;

/***  ICONE BARRE DE TACHES ***/
void PITaskBarAdd(HICON hIcon, int idIcon)
{
	NOTIFYICONDATA tnid;

   tnid.cbSize = sizeof(NOTIFYICONDATA);
   tnid.hWnd = hWndMain;
   tnid.uID = idIcon;
   tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
   tnid.uCallbackMessage = WM_PITASKBAR;
   tnid.hIcon = hIcon;
   lstrcpyn(tnid.szTip, szAppName, sizeof(tnid.szTip));
   Shell_NotifyIcon(NIM_ADD, &tnid);
}

void PITaskBarDel(int idIcon)
{
   NOTIFYICONDATA tnid;

   tnid.cbSize = sizeof(NOTIFYICONDATA);
   tnid.hWnd = hWndMain;
   tnid.uID = idIcon;
   Shell_NotifyIcon(NIM_DELETE, &tnid);
}
/***  FIN ICONE BARRE DE TACHES ***/


/***  RECUPERATION Bureau ***/
void PIInfos(void)
{
   RECT r;
   hWndSysListView = GetWindow(GetWindow(FindWindowEx(NULL, NULL, "Progman", "Program Manager"), GW_CHILD), GW_CHILD);
   nIcons = ListView_GetItemCount(hWndSysListView);
   GetWindowRect(GetDesktopWindow(), &r);
   lScreen = r.right;
   hScreen = r.bottom;
}


/*** Realise le cercle ***/
void PICircle(float ratio)
{
   int i;
   float x, y;
   float x1 = lScreen / 2;
   float y1 = hScreen / 2;
   float ratio1 = lScreen * ratio / 100;
   float ratio2 = hScreen * ratio / 100;
      
   float M_PI = 3.14;
   float Constante = 2 * M_PI / nIcons;

   for (i = 0; i < nIcons; i++)
   {
       x = x1 + ratio1 * cos(i * Constante) - 16;
       y = y1 - ratio2 * sin(i * Constante) - 24;      
       ListView_SetItemPosition(hWndSysListView, i, (int)x, (int)y);
   }
}




int WINAPI
WinMain (HINSTANCE hThisInstance,
         HINSTANCE hPrevInstance,
         LPSTR lpszArgument,
         int nFunsterStil)

{
    HWND hWnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szAppName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_WINLOGO);
    wincl.hIconSm = LoadIcon (NULL, IDI_WINLOGO);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default color as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/

   hWnd = CreateWindow(szAppName, szAppName, 
   WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_CLIPCHILDREN, 
   0, 0, 0, 0, NULL, NULL, hThisInstance, NULL);
   hWndMain = hWnd;
   hInst = hThisInstance;
   
 
   PITaskBarAdd(LoadIcon (NULL, IDI_WINLOGO), ID_ICON);
   // Pour changer l'icone de la barre des taches
   // Il faut modifier cette variable :
   // LoadIcon (NULL, IDI_WINLOGO)
   
   // Fenetre invisible au demarrage 
   ShowWindow(hWnd, SW_HIDE);



    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK
WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
        case WM_CREATE:
            PIInfos();
                   
            hWndReset = CreateWindow("button", "Reset", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 4, 4, 108, 24, hwnd, (HMENU)ID_RESET, hInst, NULL);
            SendMessage(hWndReset, WM_SETFONT, (WPARAM)GetStockObject(ANSI_VAR_FONT), 0);

            hWndOK = CreateWindow("button", "OK", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 4, 108, 108, 24, hwnd, (HMENU)ID_OK, hInst, NULL);
            SendMessage(hWndOK, WM_SETFONT, (WPARAM)GetStockObject(ANSI_VAR_FONT), 0);

            hWndRatio = CreateWindowEx(0, TRACKBAR_CLASS, "Ratio", WS_CHILD | WS_VISIBLE | TBS_NOTICKS | TBS_VERT, 44, 28, 24, 80, hwnd, (HMENU)ID_RATIO, hInst, NULL);
            SendMessage(hWndRatio, TBM_SETRANGE, (WPARAM)TRUE, (LPARAM)MAKELONG(0, 45));

            SendMessage(hWndRatio, TBM_SETPAGESIZE, (WPARAM)0, (LPARAM)4);
            SendMessage(hWndRatio, TBM_SETLINESIZE, (WPARAM)0, (LPARAM)1);
            SendMessage(hwnd, WM_COMMAND, (WPARAM)ID_RESET, (LPARAM)0);
        return 0;
    
    
        case WM_COMMAND:
      	    switch(wParam)
            {
         	   case ID_RESET:
            	 	if ((actRatio = (nIcons - 1) * 100 / 36) > 45) actRatio = 45;
                    SendMessage(hWndRatio, TBM_SETPOS, (WPARAM)TRUE, (LPARAM)actRatio);
                    PICircle(actRatio);
               break;
               
               case ID_OK:
            		ShowWindow(hwnd, SW_HIDE);
               break;
            }
      	return 0;
    
       	case WM_PITASKBAR:
       	    // Clic sur l'icone de la barre des taches 
      	    if ((wParam == ID_ICON) && (lParam == WM_LBUTTONDOWN)) ShowWindow(hwnd, SW_SHOW);
        return 0;
    
    
        case WM_VSCROLL:
         	actRatio = SendMessage(hWndRatio, TBM_GETPOS, (WPARAM)0, (LPARAM)0);
            PICircle(actRatio);
        return 0;


        case WM_ACTIVATE:
      	    switch(wParam)
            {
         	   case WA_ACTIVE:
               case WA_CLICKACTIVE:
                	PIInfos();
                    PICircle(actRatio);
                    MoveWindow(hwnd, (lScreen / 2) - 60, (hScreen / 2) - 80, 120, 160, TRUE);
                    SetForegroundWindow(hwnd);
                    break;

               case WA_INACTIVE:
                 	ShowWindow(hwnd, SW_HIDE);
                    break;
             }
        return 0;
    
    
        case WM_DESTROY:
            PITaskBarDel(ID_ICON);     // Supprimer l'icone de la barre des taches 
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}