taskmgr.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

    case WM_DESTROY:
        ShowWindow(hDlg, SW_HIDE);
        TrayIcon_ShellRemoveTrayIcon();
        wp.length = sizeof(WINDOWPLACEMENT);
        GetWindowPlacement(hDlg, &wp);
        TaskManagerSettings.Left = wp.rcNormalPosition.left;
        TaskManagerSettings.Top = wp.rcNormalPosition.top;
        TaskManagerSettings.Right = wp.rcNormalPosition.right;
        TaskManagerSettings.Bottom = wp.rcNormalPosition.bottom;
        if (IsZoomed(hDlg) || (wp.flags & WPF_RESTORETOMAXIMIZED))
            TaskManagerSettings.Maximized = TRUE;
        else
            TaskManagerSettings.Maximized = FALSE;
        return DefWindowProc(hDlg, message, wParam, lParam);

    case WM_TIMER:
        /* Refresh the performance data */
        PerfDataRefresh();
        RefreshApplicationPage();
        RefreshProcessPage();
        RefreshPerformancePage();
        TrayIcon_ShellUpdateTrayIcon();
        break;

    case WM_ENTERMENULOOP:
        TaskManager_OnEnterMenuLoop(hDlg);
        break;
    case WM_EXITMENULOOP:
        TaskManager_OnExitMenuLoop(hDlg);
        break;
    case WM_MENUSELECT:
        TaskManager_OnMenuSelect(hDlg, LOWORD(wParam), HIWORD(wParam), (HMENU)lParam);
        break;
    }

    return 0;
}

void FillSolidRect(HDC hDC, LPCRECT lpRect, COLORREF clr)
{
    SetBkColor(hDC, clr);
    ExtTextOut(hDC, 0, 0, ETO_OPAQUE, lpRect, NULL, 0, NULL);
}

void FillSolidRect2(HDC hDC, int x, int y, int cx, int cy, COLORREF clr)
{
    RECT rect;

    SetBkColor(hDC, clr);
    rect.left = x;
    rect.top = y;
    rect.right = x + cx;
    rect.bottom = y + cy;
    ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &rect, NULL, 0, NULL);
}

void Draw3dRect(HDC hDC, int x, int y, int cx, int cy, COLORREF clrTopLeft, COLORREF clrBottomRight)
{
    FillSolidRect2(hDC, x, y, cx - 1, 1, clrTopLeft);
    FillSolidRect2(hDC, x, y, 1, cy - 1, clrTopLeft);
    FillSolidRect2(hDC, x + cx, y, -1, cy, clrBottomRight);
    FillSolidRect2(hDC, x, y + cy, cx, -1, clrBottomRight);
}

void Draw3dRect2(HDC hDC, LPRECT lpRect, COLORREF clrTopLeft, COLORREF clrBottomRight)
{
    Draw3dRect(hDC, lpRect->left, lpRect->top, lpRect->right - lpRect->left,
        lpRect->bottom - lpRect->top, clrTopLeft, clrBottomRight);
}

BOOL OnCreate(HWND hWnd)
{
    HMENU   hMenu;
    HMENU   hEditMenu;
    HMENU   hViewMenu;
    HMENU   hUpdateSpeedMenu;
    HMENU   hCPUHistoryMenu;
    int     nActivePage;
    int     nParts[3];
    RECT    rc;
    TCHAR   szTemp[256];
    TCITEM  item;

    SendMessage(hMainWnd, WM_SETICON, ICON_BIG, (LPARAM)LoadIcon(hInst, MAKEINTRESOURCE(IDI_TASKMANAGER)));

    /* Initialize the Windows Common Controls DLL */
    InitCommonControls();

    /* Get the minimum window sizes */
    GetWindowRect(hWnd, &rc);
    nMinimumWidth = (rc.right - rc.left);
    nMinimumHeight = (rc.bottom - rc.top);

    /* Create the status bar */
    hStatusWnd = CreateStatusWindow(WS_VISIBLE|WS_CHILD|WS_CLIPSIBLINGS|SBT_NOBORDERS, _T(""), hWnd, STATUS_WINDOW);
    if(!hStatusWnd)
        return FALSE;

    /* Create the status bar panes */
    nParts[0] = 100;
    nParts[1] = 210;
    nParts[2] = 400;
    SendMessage(hStatusWnd, SB_SETPARTS, 3, (LPARAM) (LPINT) nParts);

    /* Create tab pages */
    hTabWnd = GetDlgItem(hWnd, IDC_TAB);
#if 1
    hApplicationPage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_APPLICATION_PAGE), hWnd, ApplicationPageWndProc);
    hProcessPage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_PROCESS_PAGE), hWnd, ProcessPageWndProc);
    hPerformancePage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_PERFORMANCE_PAGE), hWnd, PerformancePageWndProc);
#else
    hApplicationPage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_APPLICATION_PAGE), hTabWnd, ApplicationPageWndProc);
    hProcessPage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_PROCESS_PAGE), hTabWnd, ProcessPageWndProc);
    hPerformancePage = CreateDialog(hInst, MAKEINTRESOURCE(IDD_PERFORMANCE_PAGE), hTabWnd, PerformancePageWndProc);
#endif

    /* Insert tabs */
    LoadString(hInst, IDS_TAB_APPS, szTemp, 256);
    memset(&item, 0, sizeof(TCITEM));
    item.mask = TCIF_TEXT;
    item.pszText = szTemp;
    (void)TabCtrl_InsertItem(hTabWnd, 0, &item);
    LoadString(hInst, IDS_TAB_PROCESSES, szTemp, 256);
    memset(&item, 0, sizeof(TCITEM));
    item.mask = TCIF_TEXT;
    item.pszText = szTemp;
    (void)TabCtrl_InsertItem(hTabWnd, 1, &item);
    LoadString(hInst, IDS_TAB_PERFORMANCE, szTemp, 256);
    memset(&item, 0, sizeof(TCITEM));
    item.mask = TCIF_TEXT;
    item.pszText = szTemp;
    (void)TabCtrl_InsertItem(hTabWnd, 2, &item);

    /* Size everything correctly */
    GetClientRect(hWnd, &rc);
    nOldWidth = rc.right;
    nOldHeight = rc.bottom;
    /* nOldStartX = rc.left; */
    /*nOldStartY = rc.top;  */

#define PAGE_OFFSET_LEFT    17
#define PAGE_OFFSET_TOP     72
#define PAGE_OFFSET_WIDTH   (PAGE_OFFSET_LEFT*2)
#define PAGE_OFFSET_HEIGHT  (PAGE_OFFSET_TOP+32)

    if ((TaskManagerSettings.Left != 0) ||
        (TaskManagerSettings.Top != 0) ||
        (TaskManagerSettings.Right != 0) ||
        (TaskManagerSettings.Bottom != 0))
    {
        MoveWindow(hWnd, TaskManagerSettings.Left, TaskManagerSettings.Top, TaskManagerSettings.Right - TaskManagerSettings.Left, TaskManagerSettings.Bottom - TaskManagerSettings.Top, TRUE);
#ifdef __GNUC__TEST__
        MoveWindow(hApplicationPage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
        MoveWindow(hProcessPage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
        MoveWindow(hPerformancePage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
#endif
    }
    if (TaskManagerSettings.Maximized)
        ShowWindow(hWnd, SW_MAXIMIZE);

    /* Set the always on top style */
    hMenu = GetMenu(hWnd);
    hEditMenu = GetSubMenu(hMenu, 1);
    hViewMenu = GetSubMenu(hMenu, 2);
    hUpdateSpeedMenu = GetSubMenu(hViewMenu, 1);
    hCPUHistoryMenu = GetSubMenu(hViewMenu, 7);

    /* Check or uncheck the always on top menu item */
    if (TaskManagerSettings.AlwaysOnTop) {
        CheckMenuItem(hEditMenu, ID_OPTIONS_ALWAYSONTOP, MF_BYCOMMAND|MF_CHECKED);
        SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
    } else {
        CheckMenuItem(hEditMenu, ID_OPTIONS_ALWAYSONTOP, MF_BYCOMMAND|MF_UNCHECKED);
        SetWindowPos(hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE);
    }

    /* Check or uncheck the minimize on use menu item */
    if (TaskManagerSettings.MinimizeOnUse)
        CheckMenuItem(hEditMenu, ID_OPTIONS_MINIMIZEONUSE, MF_BYCOMMAND|MF_CHECKED);
    else
        CheckMenuItem(hEditMenu, ID_OPTIONS_MINIMIZEONUSE, MF_BYCOMMAND|MF_UNCHECKED);

    /* Check or uncheck the hide when minimized menu item */
    if (TaskManagerSettings.HideWhenMinimized)
        CheckMenuItem(hEditMenu, ID_OPTIONS_HIDEWHENMINIMIZED, MF_BYCOMMAND|MF_CHECKED);
    else
        CheckMenuItem(hEditMenu, ID_OPTIONS_HIDEWHENMINIMIZED, MF_BYCOMMAND|MF_UNCHECKED);

    /* Check or uncheck the show 16-bit tasks menu item */
    if (TaskManagerSettings.Show16BitTasks)
        CheckMenuItem(hEditMenu, ID_OPTIONS_SHOW16BITTASKS, MF_BYCOMMAND|MF_CHECKED);
    else
        CheckMenuItem(hEditMenu, ID_OPTIONS_SHOW16BITTASKS, MF_BYCOMMAND|MF_UNCHECKED);

    if (TaskManagerSettings.View_LargeIcons)
        CheckMenuRadioItem(hViewMenu, ID_VIEW_LARGE, ID_VIEW_DETAILS, ID_VIEW_LARGE, MF_BYCOMMAND);
    else if (TaskManagerSettings.View_SmallIcons)
        CheckMenuRadioItem(hViewMenu, ID_VIEW_LARGE, ID_VIEW_DETAILS, ID_VIEW_SMALL, MF_BYCOMMAND);
    else
        CheckMenuRadioItem(hViewMenu, ID_VIEW_LARGE, ID_VIEW_DETAILS, ID_VIEW_DETAILS, MF_BYCOMMAND);

    if (TaskManagerSettings.ShowKernelTimes)
        CheckMenuItem(hViewMenu, ID_VIEW_SHOWKERNELTIMES, MF_BYCOMMAND|MF_CHECKED);
    else
        CheckMenuItem(hViewMenu, ID_VIEW_SHOWKERNELTIMES, MF_BYCOMMAND|MF_UNCHECKED);

    if (TaskManagerSettings.UpdateSpeed == 1)
        CheckMenuRadioItem(hUpdateSpeedMenu, ID_VIEW_UPDATESPEED_HIGH, ID_VIEW_UPDATESPEED_PAUSED, ID_VIEW_UPDATESPEED_HIGH, MF_BYCOMMAND);
    else if (TaskManagerSettings.UpdateSpeed == 2)
        CheckMenuRadioItem(hUpdateSpeedMenu, ID_VIEW_UPDATESPEED_HIGH, ID_VIEW_UPDATESPEED_PAUSED, ID_VIEW_UPDATESPEED_NORMAL, MF_BYCOMMAND);
    else if (TaskManagerSettings.UpdateSpeed == 4)
        CheckMenuRadioItem(hUpdateSpeedMenu, ID_VIEW_UPDATESPEED_HIGH, ID_VIEW_UPDATESPEED_PAUSED, ID_VIEW_UPDATESPEED_LOW, MF_BYCOMMAND);
    else
        CheckMenuRadioItem(hUpdateSpeedMenu, ID_VIEW_UPDATESPEED_HIGH, ID_VIEW_UPDATESPEED_PAUSED, ID_VIEW_UPDATESPEED_PAUSED, MF_BYCOMMAND);

    if (TaskManagerSettings.CPUHistory_OneGraphPerCPU)
        CheckMenuRadioItem(hCPUHistoryMenu, ID_VIEW_CPUHISTORY_ONEGRAPHALL, ID_VIEW_CPUHISTORY_ONEGRAPHPERCPU, ID_VIEW_CPUHISTORY_ONEGRAPHPERCPU, MF_BYCOMMAND);
    else
        CheckMenuRadioItem(hCPUHistoryMenu, ID_VIEW_CPUHISTORY_ONEGRAPHALL, ID_VIEW_CPUHISTORY_ONEGRAPHPERCPU, ID_VIEW_CPUHISTORY_ONEGRAPHALL, MF_BYCOMMAND);

    nActivePage = TaskManagerSettings.ActiveTabPage;
    TabCtrl_SetCurFocus/*Sel*/(hTabWnd, 0);
    TabCtrl_SetCurFocus/*Sel*/(hTabWnd, 1);
    TabCtrl_SetCurFocus/*Sel*/(hTabWnd, 2);
    TabCtrl_SetCurFocus/*Sel*/(hTabWnd, nActivePage);

    if (TaskManagerSettings.UpdateSpeed == 1)
        SetTimer(hWnd, 1, 1000, NULL);
    else if (TaskManagerSettings.UpdateSpeed == 2)
        SetTimer(hWnd, 1, 2000, NULL);
    else if (TaskManagerSettings.UpdateSpeed == 4)
        SetTimer(hWnd, 1, 4000, NULL);

    /*
     * Refresh the performance data
     * Sample it twice so we can establish
     * the delta values & cpu usage
     */
    PerfDataRefresh();
    PerfDataRefresh();

    RefreshApplicationPage();
    RefreshProcessPage();
    RefreshPerformancePage();

    TrayIcon_ShellAddTrayIcon();

    return TRUE;
}

/* OnMove()
 * This function handles all the moving events for the application
 * It moves every child window that needs moving
 */
void OnMove( WPARAM nType, int cx, int cy )
{
#ifdef __GNUC__TEST__
    MoveWindow(hApplicationPage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
    MoveWindow(hProcessPage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
    MoveWindow(hPerformancePage, TaskManagerSettings.Left + PAGE_OFFSET_LEFT, TaskManagerSettings.Top + PAGE_OFFSET_TOP, TaskManagerSettings.Right - TaskManagerSettings.Left - PAGE_OFFSET_WIDTH, TaskManagerSettings.Bottom - TaskManagerSettings.Top - PAGE_OFFSET_HEIGHT, FALSE);
#endif
}

/* OnSize()
 * This function handles all the sizing events for the application
 * It re-sizes every window, and child window that needs re-sizing
 */
void OnSize( WPARAM nType, int cx, int cy )
{
    int     nParts[3];
    int     nXDifference;
    int     nYDifference;
    RECT    rc;

    if (nType == SIZE_MINIMIZED)
    {
        if(TaskManagerSettings.HideWhenMinimized)
        {
          ShowWindow(hMainWnd, SW_HIDE);
        }
        return;
    }

    nXDifference = cx - nOldWidth;
    nYDifference = cy - nOldHeight;
    nOldWidth = cx;
    nOldHeight = cy;

    /* Update the status bar size */
    GetWindowRect(hStatusWnd, &rc);
    SendMessage(hStatusWnd, WM_SIZE, nType, MAKELPARAM(cx, cy + (rc.bottom - rc.top)));

    /* Update the status bar pane sizes */
    nParts[0] = bInMenuLoop ? -1 : 100;
    nParts[1] = 210;
    nParts[2] = cx;
    SendMessage(hStatusWnd, SB_SETPARTS, bInMenuLoop ? 1 : 3, (LPARAM) (LPINT) nParts);

    /* Resize the tab control */
    GetWindowRect(hTabWnd, &rc);
    cx = (rc.right - rc.left) + nXDifference;
    cy = (rc.bottom - rc.top) + nYDifference;
    SetWindowPos(hTabWnd, NULL, 0, 0, cx, cy, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOMOVE|SWP_NOZORDER);

    /* Resize the application page */
    GetWindowRect(hApplicationPage, &rc);
    cx = (rc.right - rc.left) + nXDifference;
    cy = (rc.bottom - rc.top) + nYDifference;
    SetWindowPos(hApplicationPage, NULL, 0, 0, cx, cy, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOMOVE|SWP_NOZORDER);

    /* Resize the process page */
    GetWindowRect(hProcessPage, &rc);
    cx = (rc.right - rc.left) + nXDifference;
    cy = (rc.bottom - rc.top) + nYDifference;
    SetWindowPos(hProcessPage, NULL, 0, 0, cx, cy, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOMOVE|SWP_NOZORDER);

    /* Resize the performance page */
    GetWindowRect(hPerformancePage, &rc);
    cx = (rc.right - rc.left) + nXDifference;
    cy = (rc.bottom - rc.top) + nYDifference;
    SetWindowPos(hPerformancePage, NULL, 0, 0, cx, cy, SWP_NOACTIVATE|SWP_NOOWNERZORDER|SWP_NOMOVE|SWP_NOZORDER);
}

void LoadSettings(void)
{
    HKEY    hKey;
    TCHAR   szSubKey[] = _T("Software\\ReactWare\\TaskManager");
    int     i;
    DWORD   dwSize;

    /* Window size & position settings */
    TaskManagerSettings.Maximized = FALSE;
    TaskManagerSettings.Left = 0;
    TaskManagerSettings.Top = 0;
    TaskManagerSettings.Right = 0;
    TaskManagerSettings.Bottom = 0;

    /* Tab settings */
    TaskManagerSettings.ActiveTabPage = 0;

    /* Options menu settings */
    TaskManagerSettings.AlwaysOnTop = FALSE;