#include "precomp.h"

Include dependency graph for trayicon.c:

Functions
HICON	TrayIcon_GetProcessorUsageIcon (void)

BOOL	TrayIcon_ShellAddTrayIcon (void)

BOOL	TrayIcon_ShellRemoveTrayIcon (void)

BOOL	TrayIcon_ShellUpdateTrayIcon (void)

Function Documentation

◆ TrayIcon_GetProcessorUsageIcon()

HICON TrayIcon_GetProcessorUsageIcon ( void )

Definition at line 26 of file trayicon.c.

{
    HICON     hTrayIcon = NULL;
    HDC       hScreenDC = NULL;
    HDC       hDC = NULL;
    HBITMAP   hBitmap = NULL;
    HBITMAP   hOldBitmap = NULL;
    HBITMAP   hBitmapMask = NULL;
    ICONINFO  iconInfo;
    ULONG     ProcessorUsage;
    int       nLinesToDraw;
    HBRUSH    hBitmapBrush = NULL;
    RECT      rc;
 
    /*
     * Get a handle to the screen DC
     */
    hScreenDC = GetDC(NULL);
    if (!hScreenDC)
        goto done;
 
    /*
     * Create our own DC from it
     */
    hDC = CreateCompatibleDC(hScreenDC);
    if (!hDC)
        goto done;
 
    /*
     * Load the bitmaps
     */
    hBitmap = LoadBitmapW(hInst, MAKEINTRESOURCEW(IDB_TRAYICON));
    hBitmapMask = LoadBitmapW(hInst, MAKEINTRESOURCEW(IDB_TRAYMASK));
    if (!hBitmap || !hBitmapMask)
        goto done;
 
    hBitmapBrush = CreateSolidBrush(RGB(0, 255, 0));
    if (!hBitmapBrush)
        goto done;
 
    /*
     * Select the bitmap into our device context
     * so we can draw on it.
     */
    hOldBitmap = (HBITMAP) SelectObject(hDC, hBitmap);
 
    /*
     * Get the cpu usage
     */
    ProcessorUsage = PerfDataGetProcessorUsage();
 
    /*
     * Calculate how many lines to draw
     * since we have 11 rows of space
     * to draw the cpu usage instead of
     * just having 10.
     */
    nLinesToDraw = (ProcessorUsage + (ProcessorUsage / 10)) / 11;
    rc.left = 3;
    rc.top = 12 - nLinesToDraw;
    rc.right = 13;
    rc.bottom = 13;
 
    /*
     * Now draw the cpu usage
     */
    if (nLinesToDraw)
        FillRect(hDC, &rc, hBitmapBrush);
 
    /*
     * Now that we are done drawing put the
     * old bitmap back.
     */
    hBitmap = SelectObject(hDC, hOldBitmap);
    hOldBitmap = NULL;
 
    iconInfo.fIcon = TRUE;
    iconInfo.hbmMask = hBitmapMask;
    iconInfo.hbmColor = hBitmap;
 
    hTrayIcon = CreateIconIndirect(&iconInfo);
 
done:
    /*
     * Cleanup
     */
    if (hScreenDC)
        ReleaseDC(NULL, hScreenDC);
    if (hDC)
        DeleteDC(hDC);
    if (hBitmapBrush)
        DeleteObject(hBitmapBrush);
    if (hBitmap)
        DeleteObject(hBitmap);
    if (hBitmapMask)
        DeleteObject(hBitmapMask);
 
    /*
     * Return the newly created tray icon (if successful)
     */
    return hTrayIcon;
}

Referenced by TrayIcon_ShellAddTrayIcon(), and TrayIcon_ShellUpdateTrayIcon().

◆ TrayIcon_ShellAddTrayIcon()

BOOL TrayIcon_ShellAddTrayIcon ( void )

Definition at line 129 of file trayicon.c.

{
    NOTIFYICONDATAW nid;
    HICON           hIcon = NULL;
    BOOL            bRetVal;
    WCHAR           szMsg[64];
 
    memset(&nid, 0, sizeof(NOTIFYICONDATAW));
 
    hIcon = TrayIcon_GetProcessorUsageIcon();
 
    nid.cbSize = sizeof(NOTIFYICONDATAW);
    nid.hWnd = hMainWnd;
    nid.uID = 0;
    nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
    nid.uCallbackMessage = WM_ONTRAYICON;
    nid.hIcon = hIcon;
 
 
    LoadStringW( GetModuleHandleW(NULL), IDS_MSG_TRAYICONCPUUSAGE, szMsg, sizeof(szMsg) / sizeof(szMsg[0]));
    wsprintfW(nid.szTip, szMsg, PerfDataGetProcessorUsage());
 
    bRetVal = Shell_NotifyIconW(NIM_ADD, &nid);
 
    if (hIcon)
        DestroyIcon(hIcon);
 
    return bRetVal;
}

Referenced by OnCreate().

◆ TrayIcon_ShellRemoveTrayIcon()

BOOL TrayIcon_ShellRemoveTrayIcon ( void )

Definition at line 159 of file trayicon.c.

{
    NOTIFYICONDATAW nid;
    BOOL            bRetVal;
 
    memset(&nid, 0, sizeof(NOTIFYICONDATAW));
 
    nid.cbSize = sizeof(NOTIFYICONDATAW);
    nid.hWnd = hMainWnd;
    nid.uID = 0;
    nid.uFlags = 0;
    nid.uCallbackMessage = WM_ONTRAYICON;
 
    bRetVal = Shell_NotifyIconW(NIM_DELETE, &nid);
 
    return bRetVal;
}

Referenced by TaskManagerWndProc().

◆ TrayIcon_ShellUpdateTrayIcon()

BOOL TrayIcon_ShellUpdateTrayIcon ( void )

Definition at line 177 of file trayicon.c.