任务栏托盘不消失的问题-有启发

通过找出该图标所对应的进程ID，如果该ID为NULL则删除该图标.

#include <AFX.H>
#include <COMMCTRL.H>
#include <iostream.h>
int main()
{
HWND  hStatus=::FindWindow("Shell_TrayWnd",NULL);  //得到任务栏句柄
if  (hStatus==NULL)
{
cout<<"Get Shell_TrayWnd error!\n";
return -1;
}
HWND  hNotify=FindWindowEx(hStatus,NULL,"TrayNotifyWnd",NULL); //右下角区域
if  (hNotify==NULL)
{
cout<<"Get TrayNotifyWnd error!\n";
return -1;
}
HWND  hNotify1=FindWindowEx(hNotify,NULL,"SysPager",NULL);
if  (hNotify==NULL)
{
cout<<"Get SysPager error!\n";
return -1;
}
HWND  hNotify1_0=FindWindowEx(hNotify1,NULL,"ToolBarWindow32",NULL);//右下角区域(不包括时间)
if  (hNotify1_0==NULL)
{
cout<<"Get ToolBarWindow32 error!\n";
return -1;
}
//-------------------以上是得到任务栏右下脚一块地方的句柄
DWORD  pid = 0;
GetWindowThreadProcessId(hNotify1_0,&pid);
if  (pid==NULL)
{
cout<<"Get pid error!\n";
return -1;
}   

HANDLE  hProcess=OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_ALL_ACCESS,true,pid);
if  (hProcess==NULL)
{
cout<<"Get hd error!\n";
return -1;
}
::SendMessage(hNotify1_0,WM_PAINT ,NULL,NULL);
CRect rect;
::GetWindowRect(hNotify1_0,&rect);
::InvalidateRect(hNotify1_0,&rect,false);
int  iNum=::SendMessage(hNotify1_0,TB_BUTTONCOUNT ,NULL,NULL);  //获取任务栏上图标个数

unsigned long n = 0;
TBBUTTON  *pButton = new TBBUTTON;
CString  strInfo = _T("");
wchar_t  name[256] = {0};
TBBUTTON  BButton;
unsigned   long    whd,proid;
CString x;

for(int i=0; i<iNum; i++)
{
::SendMessage(hNotify1_0,TB_GETBUTTON,i,(LPARAM)(&BButton));
ReadProcessMemory(hProcess,&BButton,pButton,sizeof(TBBUTTON),&n);
if  (pButton->iString != 0xffffffff)
{
try
{
ReadProcessMemory(hProcess,(void *)pButton->iString,name,255,&n);
}
catch(...)
{
}
strInfo.Format("%d : %s\n",i+1,CString(name));
TRACE(strInfo);
cout<<strInfo<<endl;
}

try
{
whd=0;
ReadProcessMemory(hProcess,(void   *)pButton->dwData,&whd,4,&n);
}
catch(...)
{
}
proid=NULL;
GetWindowThreadProcessId((HWND)whd,&proid);
if(proid==NULL)
::SendMessage(hNotify1_0,TB_DELETEBUTTON,i,0);
}
delete pButton;
return 0;
}