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;
}