TaskIcon 系统任务栏图标

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#include <Shellapi.h> // for task icon

#pragma comment (lib, "Shell32.lib")

#define WM_TRAYICON    WM_USER + 1
#define    ICON_ID    1


BOOL    
TrayIcon (HWND hwnd, HICON hIcon, DWORD dwMsg)
{
    NOTIFYICONDATA nid = {0};
    nid.cbSize    = sizeof (NOTIFYICONDATA);
    nid.hWnd    = hwnd;
    nid.uID        = ICON_ID;
    nid.uFlags    = NIF_TIP | NIF_ICON | NIF_MESSAGE;
    nid.uCallbackMessage    = WM_TRAYICON;
    nid.hIcon    = hIcon;

    lstrcpy (nid.szTip, "CloneHv -v1\nA software simulating LPR");
    return Shell_NotifyIcon (dwMsg, &nid);
}


void    
OnTrayIcon (UINT uIconId, UINT uMsg)
{
    if (uIconId == ICON_ID) {
        if (uMsg == WM_LBUTTONUP) {
            ShowWindow (g_hwndDlg, SW_SHOWNORMAL);
            SetForegroundWindow (g_hwndDlg);
        }
    }
}


void    
OnSize (WPARAM wFlag, WORD wWidth, WORD wHeight)
{
    if (wFlag == SIZE_MINIMIZED) {
        ShowWindow (g_hwndDlg, SW_HIDE);
    }
}


HWND    g_hwndDlg = NULL;
HICON    g_hIcon = NULL;

WM_INITDIALOG:
hwndDlg = hwndDlg;
g_hIcon = ::LoadIcon (g_hInst, MAKEINTRESOURCE (IDI_ICON1));
TrayIcon (hwnd, g_hIcon, NIM_ADD);

WM_SIZE:
case WM_SIZE:
        OnSize (wParam, LOWORD (lParam), HIWORD (wParam));

WM_CLOSE:
TrayIcon (g_hwndDlg, g_hIcon, NIM_DELETE);
            DestroyIcon (g_hIcon);
        return TRUE;