获取桌面上所有程序图标的标题--上位机VC

qq263946146 · 2016-11-29 19:11:36

获取桌面上所有程序图标的标题

功能展示

桌面上有各种各样的图标，图标下配有对应文字说明，如我的电脑图标，回收站图标网上邻居图标，我们当前例程实现桌面图标对应的文字获取，效果如图，点击按钮<获取桌面图标标题>例程会将桌面上所有图标对应标题全部罗列到列表中

要点提示

例程首先是桌面窗口句柄的获取，通过代码hWnd = FindWindowEx(NULL, NULL, “Progman”, NULL），hWnd = FindWindowEx(hWnd, NULL, “SHELLDLL_DefView”, NULL）hWnd = FindWindowEx(hWnd, NULL, “SysListView32”, NULL）可获得桌面窗口句柄；

通过函数SendMessage()向窗口句柄发送消息LVM_GETITEMCOUNT，可获得桌面图标个数

Int nItemCount =::SendMessage(hWnd, LVM_GETITEMCOUNT, (WPARAM)0, (LPARAM)0);

然后再通过函数::SendMessage(hWnd,LVM_GETITEMTEXT, (WPARAM)i, (LPARAM)pData);

获得图标相关数据，

通过ReadProcessMemory(hProcess,pString, szText, ALLOC_SIZE, &BytesRead);

就可获得图标对应的标题，保存在szText变量里；

最后就是通过CListCtrl控件的成员函数SetItemText()显示获得的标题

实现功能

1.新建基于对话框的应用程序

2.拖拽一列表控件ID保持不变IDC_LIST1,添加一按钮《获取桌面图标标题》关联按钮的点击函数，获取标题

void CGkbc8Dlg::OnButton1()
{
CListCtrl* pList = (CListCtrl*)GetDlgItem(IDC_LIST1);
pList->DeleteAllItems();
#define ALLOC_SIZE 200// bytes to allocate for icon text and LVITEM struct
HWND hWnd; // handle to desktop window
DWORD dwPID; // explorer process ID (associated with desktop)
HANDLE hProcess; // handle to explorer process (associated with desktop)
LPVOID pData; // pointer to LVITEM struct in explorer address space
LPVOID pString; // pointer to icon text in explorer address space
char szText[ALLOC_SIZE]; // char array of icon text in application address space
SIZE_T BytesRead; // for ReadProcessMemory
SIZE_T BytesWritten; // for WriteProcessMemory
BOOL fResult; // for ReadProcessMemory/WriteProcessMemory
LVITEM lvi; // LVITEM struct
int i; // counter for enumeration
int nItemCount; // icon item count
// get desktop window handle "Progman=EXPLORER.EXE桌面图标下方窗口"
if(((hWnd = FindWindowEx(NULL, NULL, "Progman", NULL)) == NULL) ||
((hWnd = FindWindowEx(hWnd, NULL, "SHELLDLL_DefView", NULL)) == NULL) ||
((hWnd = FindWindowEx(hWnd, NULL, "SysListView32", NULL)) == NULL))
{
MessageBox("Could not get desktop window.");
goto Exit;
}
// get desktop window process ID (explorer.exe)
GetWindowThreadProcessId(hWnd, &dwPID);
// open process to get explorer process handle
hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwPID);
// allocate memory in explorer's address space
// allocate space for LVITEM struct

复制代码

pData = VirtualAllocEx(hProcess, NULL, ALLOC_SIZE, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
// allocate space for string (i.e. "Network Neighborhood")
pString = VirtualAllocEx(hProcess, NULL, ALLOC_SIZE, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
// init LV_ITEM struct
ZeroMemory(&lvi, sizeof(LVITEM));
lvi.iItem = 0;
lvi.iSubItem = 0;
lvi.cchTextMax = 500;
lvi.pszText = (char*)pString; // use alloc'd string space
// write the contents of lvi into explorer's address space
fResult = WriteProcessMemory(hProcess, pData, &lvi, sizeof(LVITEM), &BytesWritten);
// get item count on desktop
nItemCount = ::SendMessage(hWnd, LVM_GETITEMCOUNT, (WPARAM)0, (LPARAM)0);
for(i = 0; i < nItemCount; i++)// enum all icons
{
// get item's name
::SendMessage(hWnd, LVM_GETITEMTEXT, (WPARAM)i, (LPARAM)pData);
// read back lvi struct (for debugging purposes only)
fResult = ReadProcessMemory(hProcess, pData, szText, ALLOC_SIZE, &BytesRead);
// read text of queried item
fResult = ReadProcessMemory(hProcess, pString, szText, ALLOC_SIZE, &BytesRead);
CString sIndex;
sIndex.Format("%d",i);
pList->InsertItem(i,"");
pList->SetItemText(i,0,sIndex);
pList->SetItemText(i,1,szText);
}
// free alloc'd memory for string and LVITEM structs
if(!VirtualFreeEx(hProcess, pString, ALLOC_SIZE, MEM_DECOMMIT))
{
MessageBox("VirtualFreeEx failed.");
goto Exit;
}