[C++]隐藏/删除/显示托盘图标

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研究了一下Windows的托盘，发现是个Toolbar，于是我们就可以用常用的消息对其进行处理，只是需要在Explorer.exe进程申请一块内存来保存数据：

struct TRAYDATA
{
HWND hWnd;
UINT uID;
UINT uCallbackMessage;
DWORD Reserved1[2];
HICON hIcon;
DWORD Reserved2[3];
TCHAR szExePath[MAX_PATH];
TCHAR szTip[128]; 
};
//获取托盘可见区域句柄
HWND hWnd = NULL;
hWnd = ::FindWindow(_T("Shell_TrayWnd"), NULL);
hWnd = ::FindWindowEx(hWnd, NULL, _T("TrayNotifyWnd"), NULL);
//hWnd = ::FindWindowEx(hWnd, NULL, _T("ReBarWindow32"), NULL);
//hWnd = ::FindWindowEx(hWnd, NULL, _T("CiceroUIWndFrame"), NULL);
hWnd = ::FindWindowEx(hWnd, NULL, _T("SysPager"), NULL);
//hWnd = ::FindWindowEx(hWnd, NULL, _T("Button"), NULL);
hWnd = ::FindWindowEx(hWnd, NULL, _T("ToolbarWindow32"), NULL);
//获取进程 ID
DWORD dwPID = 0;
::GetWindowThreadProcessId(hWnd, &dwPID);
DWORD dwCount = ::SendMessage(hWnd, TB_BUTTONCOUNT, NULL, NULL);
printf("托盘可见区域当前存在 %u 个图标！PID = %u\n", dwCount, dwPID);
//获取托盘溢出区域句柄
//hWnd = ::FindWindow(_T("NotifyIconOverflowWindow"), NULL);
//hWnd = ::FindWindowEx(hWnd, NULL, _T("ToolbarWindow32"), NULL);
//::GetWindowThreadProcessId(hWnd, &dwPID);
//dwCount = ::SendMessage(hWnd, TB_BUTTONCOUNT, NULL, NULL);
//printf("托盘溢出区域当前存在 %u 个图标！PID = %u\n", dwCount, dwPID);
//打开进程
HANDLE hProc = ::OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, dwPID);
//申请内存
LPVOID pTB = ::VirtualAllocEx(hProc, NULL, sizeof(TBBUTTON), MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
TBBUTTON tb;
TRAYDATA td;
NOTIFYICONDATA nid;
for (DWORD i = 0; i < dwCount; i++)
{
printf("获取按钮 %u 信息...%u\n", i, ::SendMessage(hWnd, TB_GETBUTTON, i, (LPARAM)pTB));
::ReadProcessMemory(hProc, pTB, &tb, sizeof(TBBUTTON), NULL);
printf("按钮 %u TRAYDATA 图标信息地址：%08X\n", i, tb.dwData);
//获取按钮文本
//获取 TRAYDATA 信息
::ReadProcessMemory(hProc, (LPVOID)tb.dwData, &td, sizeof(TRAYDATA), NULL);
printf("句柄：0x%08X，ID：%u，回调消息：0x%08X，图标句柄：0x%08X\n图标提示：\n%s\n\n", td.hWnd, td.uID, td.uCallbackMessage, td.hIcon, (CStringA)CString(td.szTip));
//在屏幕上打印图标
printf("尝试在屏幕上打印图标...\n");
//::InvalidateRect(::GetForegroundWindow(), &CRect(48 * (i / 8) + 10, 48 * (i % 8) + 10, 48, 48), TRUE);
::DrawIcon(::GetDC(::GetForegroundWindow()), 48 * (i / 8) + 10, 48 * (i % 8) + 10, td.hIcon);
::Sleep(2000);
//显示 / 隐藏图标
//方法一：发送消息至托盘工具条
//printf("尝试隐藏托盘图标...\n");
//::SendMessage(hWnd, TB_HIDEBUTTON, tb.idCommand, MAKELONG(TRUE, 0)); //隐藏图标(留下空白的占用位)
//::Sleep(2000);
//printf("尝试恢复托盘图标...\n");
//::SendMessage(hWnd, TB_HIDEBUTTON, tb.idCommand, MAKELONG(FALSE, 0)); //显示图标
//方法二：填充 NOTIFYICONDATA 结构体，调用 Shell_NotifyIcon 函数
nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = td.hWnd;
nid.uID = td.uID;
nid.uCallbackMessage = td.uCallbackMessage;
nid.hIcon = td.hIcon;
memcpy(nid.szTip, td.szTip, sizeof(nid.szTip));
nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
printf("尝试删除托盘图标...\n");
::Shell_NotifyIcon(NIM_DELETE, &nid); //删除图标(注意这里是删除而不是隐藏)
::Sleep(2000);
printf("尝试恢复托盘图标...\n");
::Shell_NotifyIcon(NIM_ADD, &nid); //显示图标
}
//释放内存
::VirtualFreeEx(hProc, pTB, sizeof(TBBUTTON), MEM_FREE);
//关闭进程句柄
::CloseHandle(hProc);
system("Pause");

 

这个是控制台程序，VS2008+XP/Win7测试通过， 请注意XP没有“溢出托盘区域”。。。

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