主要用到的是MSAA(Microsoft Active Accessibility) 函數:ObjectFromLResult,該函數在動态連結庫 oleacc.dll 中定義。
uses SHDocVw, MsHtml, ActiveX;
type
TObjectFromLResult = function(LRESULT: lResult; const IID: TIID; WPARAM: wParam; out pObject): HRESULT; stdcall;
function GetIEFromHWND(WHandle: HWND; var IE: IWebbrowser2): HRESULT;
var
hInst: HWND;
lRes: Cardinal;
MSG: Integer;
pDoc: IHTMLDocument2;
ObjectFromLresult: TObjectFromLresult;
begin
Result := S_False;
hInst := LoadLibrary('Oleacc.dll');
@ObjectFromLresult := GetProcAddress(hInst, 'ObjectFromLresult');
if @ObjectFromLresult <> nil then begin
try
MSG := RegisterWindowMessage('WM_HTML_GETOBJECT');
SendMessageTimeOut(WHandle, MSG, 0, 0, SMTO_ABORTIFHUNG, 1000, lRes);
Result := ObjectFromLresult(lRes, IHTMLDocument2, 0, pDoc);
if Result = S_OK then
(pDoc.parentWindow as IServiceprovider).QueryService(IWebbrowserApp, IWebbrowser2, IE);
finally
FreeLibrary(hInst);
end;
end;
end;
調用例子,以下代碼快速關閉所有打開的IE視窗:
procedure TForm1.Button1Click(Sender: TObject);
var
hCurWindow, hMainWnd, hTabWnd, hCldWnd:HWnd; //視窗句柄
WinClsName:array[0..255] of char;
IE1: IWebbrowser2;
begin
hCurWindow := GetWindow(Handle,GW_HWNDFirst); //擷取第一個視窗的句柄
while hCurWindow<>0 do
begin
GetClassName(hCurWindow, @WinClsName, 255);
if String(WinClsName) = 'IEFrame' then
begin
hMainWnd := hCurWindow;
hCldWnd := hCurWindow;
hTabWnd := 0;
repeat //循環查找所有頁籤
hTabWnd := FindWindowEx(hMainWnd, hTabWnd, 'Frame Tab', nil);
if hTabWnd <> 0 then hCldWnd := FindWindowEx(hTabWnd, 0, 'TabWindowClass', nil);
if hCldWnd <> 0 then hCldWnd := FindWindowEx(hCldWnd, 0, 'Shell DocObject View', nil);
if hCldWnd <> 0 then hCldWnd := FindWindowEx(hCldWnd, 0, 'Internet Explorer_Server', nil);
if hCldWnd <> 0 then if GetIEFromHWnd(hCldWnd, IE1) = S_OK then //擷取IWebBrowser2
begin
IE1.Quit; //關閉IE,也可以執行其他操作,呵呵
end;
until hTabWnd = 0;
end;
hCurWindow:=GetWindow(hCurWindow,GW_HWNDNEXT); //擷取下一個視窗的句柄
end;
end;
function Tfrm_Main.GetValueByHTMLDocument(): string;
var
Dispatch: IDispatch;
Web: IWebBrowser2;
ShellWindow: IShellWindows;
i: integer;
sUserID,sIP: string;
Finput: IHTMLInputElement;
HTMLDocument: IHTMLDocument2;
LoginListTemp:array[1..7]of string;
begin
Result := '';
// tmr3.Enabled:= False;
ShellWindow := CoShellWindows.Create;
Move(ListLogin,LoginListTemp,SizeOf(LoginListTemp));
for i := 0 to ShellWindow.Count do
begin
try
Dispatch := ShellWindow.Item(i);
if Dispatch = nil then continue;
Dispatch.QueryInterface(IWebBrowser2, Web);
if Web = nil then continue;
if Pos('iexplore.exe', LowerCase(Web.FullName)) = 0 then Continue;
if Pos('http://15.0.32.10:1320/cos_tapp/', LowerCase(Web.LocationURL)) <0 then Continue;
Web.Document.QueryInterface(IHTMLDocument2, HTMLDocument);
if HTMLDocument = nil then Exit;
Finput := HTMLDocument.all.item('ipt_userCode',varEmpty) as IHTMLInputElement;
if Finput <> nil then
begin
Result := Finput.value; // 工号
if AnsiIndexText(Result, ListLogin) >= 0 then
begin
try
sIP := GUserParam.UserIP;
//WriteTxtLog(' IP: '+sIP+', 嘗試登陸排程工号: '+Result+'。');
HTMLDocument.parentWindow.execScript('document.getElementById(''ipt_userCode'').value=''您已被記錄,請不要嘗試登陸排程工号!'';','javascript');
IPCrab(sIP);
except on e: Exception do
begin
WriteLog('浏覽器安全等級過高,請降低安全等級! ' + e.Message,'E');
end;
end;
end;
end;
except on e: Exception do
begin
end;
end;
end;
end;
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原文連結:https://blog.csdn.net/weixin_34014555/article/details/92007873