怎样使用EnumWindows函数搜索所有窗体的句柄？请跟进！

[zhufeng29]

怎样使用EnumWindows函数搜索所有窗体的句柄？怎样通过得到的句柄向窗体发送自定义消息？

[Frank_Xu]

struct LPar
{
HTREEITEM hidx;
CTreeCtrl *tree;
CListCtrl *list;
};

void CxxxDlg::OnRefresh()
{
// TODO: Add your control notification handler code here
tview.DeleteAllItems();
lview.DeleteAllItems();
LPar pt;
pt.tree =(CTreeCtrl *)GetDlgItem(IDC_TREE_PROC);
pt.list=(CListCtrl *)GetDlgItem (IDC_LIST_PROC);
EnumWindows((WNDENUMPROC)EnumWinProc,(LPARAM)&pt);
}

BOOL CALLBACK CxxxDlg::EnumWinProc(HWND hwnd, LPARAM lParam)
{
CString str;
LPar *temp;
int i=0;

temp=(LPar *)lParam;
CTreeCtrl *tree=(CTreeCtrl *)(temp->tree);
CListCtrl *list=(CListCtrl *)(temp->list);

str.Format ("0x%8.8X",hwnd);
list->InsertItem(i,str);
GetClassName (hwnd,(LPSTR)(LPCTSTR)str,100);
list->SetItemText(i,1,str);
::GetWindowText (hwnd,(LPSTR)(LPCTSTR)str,100);
char szText[100];
if (strlen(str)==0){
::SendMessage(hwnd,WM_GETTEXT,100,(long)szText);
str=szText;
}
list->SetItemText(i,2,str);
GetWindowModuleFileName(hwnd,szText,sizeof(szText));
list->SetItemText (i,3,szText);

//if (strlen(str)==0)GetClassName (hwnd,(LPSTR)(LPCTSTR)str,100);
if (strlen(str)){
HTREEITEM hidx;
hidx=tree->InsertItem(str,0,0);
tree->SetItemData (hidx,DWORD(hwnd));
temp->hidx =hidx;
EnumChildWindows(hwnd,EnumChildTree,(LPARAM)temp);
}
i++;
return TRUE;
}

[Frank_Xu]

BOOL CALLBACK CxxxDlg::EnumChildTree(HWND hwnd, LPARAM lParam)
{
if(hwnd)
{
char szClass[150];
GetClassName(hwnd,szClass,sizeof(szClass));

char szText[100];
::GetWindowText (hwnd,szText,sizeof(szText));
if(strlen(szText)){
strcat(szClass," - ");
strcat(szClass,szText);
}else{
::SendMessage(hwnd,WM_GETTEXT,100,(long)szText);
if (strlen(szText)) {
strcat(szClass," - ");
strcat(szClass,szText);
}
}
LPar *temp;
temp=(LPar *)lParam;
CTreeCtrl *tree=(CTreeCtrl *)(temp->tree);
HTREEITEM hidx;
hidx=tree->InsertItem (szClass,1,1,(temp->hidx));
tree->SetItemData (hidx,DWORD(hwnd));
}
return TRUE;
}

BOOL CxxxDlg::OnInitDialog()
{
lview.SetExtendedStyle (LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES);
lview.InsertColumn(0,"HWND",LVCFMT_LEFT,100);
lview.InsertColumn(1,"CLASS",LVCFMT_LEFT,160);
lview.InsertColumn(2,"TITLE & TEXT",LVCFMT_LEFT,200);
lview.InsertColumn (3,"FILE NAME",LVCFMT_LEFT,120);
}

class CxxxDlg : public CDialog
{
public:
CListCtrl lview;
//CTreeCtrl tview;
};

注:
IDC_TREE_PROC 為CTreeCtrl控件的ID
IDC_LIST_PROC 為CListCtrl控件的ID,必須是Report型
m_lview為IDC_LIST_PROC控件的變量 CListCtrl m_lview;

[Frank_Xu]

在中TreeCtrl控件選定一個節點,修改其顯示文本
void CxxxDlg::OnSettext()
{
HTREEITEM hidx=tview.GetSelectedItem();
HWND hwnd=NULL;
DWORD dwData=tview.GetItemData(hidx);
hwnd=(HWND)dwData;
if (hwnd!=NULL)
//此處是發送WM_SETTEXT消息,你可以發送你自已的消息
::SendMessage(hwnd,WM_SETTEXT,0L,(LONG)("測試文本"));
else
AfxMessageBox("HWND NULL");
}

注: tview為IDC_TREE_PROC控件的變理 CTreeCtrl tview; 見類聲明


.....回答完畢.....

[kingzai]

EnumWindows enumerates all top-level windows on the screen
example:
Enumwindows(WNDENUMPROC)EnumWinProc,0);
BOOL CALLBACK EnumWinProc(HWND hwnd, // handle to parent window
LPARAM lParam)
{
SendMessage(hwnd,WM_USER,0,0);
....
}
if you enumerates all child windows ,use EnumChildWindows