case WM_RBUTTONDOWN:
     SetWindowText(hWnd, "Hello");
     return 0;

// םדוקה רועישהמ היצקנופה םע וזה היצקנופה תא הנש

BOOL CALLBACK InputProc(HWND hDlg, UINT iMsg, 
                        WPARAM wParam, LPARAM lParam)
  { 
    static HWND hWnd;
    static char OldTitle[81];

    switch(iMsg)
      { 
        case WM_INITDIALOG:
             hWnd = pWin->hWnd;
             GetWindowText(hWnd, OldTitle, 80);
             SetWindowText(hWnd, "Working with dialogwindow");
             SetFocus(GetDlgItem(hDlg, ID_A));
             return FALSE;
        case WM_COMMAND:
             switch (LOWORD(wParam))
               { 
                 case ID_OK:
                   { 
                     char buffer[16]; char title[30]="";
                     int aGood, bGood;
                     GetDlgItemText(hDlg, ID_A, buffer, 15);

                     aGood = (sscanf(buffer, "%f", &a) == 1);
                     if (!aGood)
                       strcpy (title, "a False     ");
                     GetDlgItemText(hDlg, ID_B, buffer, 15);

                     bGood = (sscanf(buffer, "%f", &b) == 1);
                     if (!bGood)
                       strcat (title, "b False");

                     if (aGood + bGood == 2)
                       { 
                         SetWindowText(hWnd, OldTitle);
                         EndDialog(hDlg, 2);
                       }
                     else 
                       SetWindowText (hDlg, title);
                     
                     return TRUE;
                   }
                 case ID_CANCEL:
                      EndDialog(hDlg, -1);
                      return TRUE;
               }
            break;
      }
    return FALSE;
  }

hWnd = pWin->hWnd;

hWnd = GetWindow(hDlg, GW_OWNER);

SetWindowText(hDlg, title);

else if (n >= 0)
       MessageBox(hWnd, "Bad input", "Error", MB_OK | MB_ICONSTOP);