获得ie句柄，并根据句枘操作iwebbrowser2对象

var

Wnd: HWND;

WndChild:HWND;

Hdoct:IHtmlDocument2;

IE: iwebbrowser2;

All: IHtmlElementCollection;

HtmlElement: IHtmlElement;

objovt:OleVariant;

input: IHTMLInputElement;

obj:IHTMLObjectElement;

begin

Wnd := FindWindow('IEFrame', nil);

WndChild := FindWindowEx(Wnd, 0,'Frame Tab', nil);

WndChild := FindWindowEx(WndChild, 0,'TabWindowClass', nil );

WndChild := FindWindowEX(WndChild, 0, 'Shell DocObject View', nil);

WndChild := FindWindowEX(WndChild, 0, 'Internet Explorer_Server', nil);//找到'Internet Explorer_Server'类的句柄

if WndChild <> 0 then

begin

GetIEFromHWnd(WndChild, IE);

if(IE <>nil) then

begin

Hdoct:=IE.Document as IHtmlDocument2;

All:= Hdoct.all;

obj:= All.item('cardPrint',0) as IHTMLObjectElement;

input:= All.item(0,0) as IHTMLInputElement;

//input.value:='赋值';

input.select();

end;

end;

end;

function TActiveFormX.GetIEFromHWND(WHandle: HWND; var IE: IWebbrowser2): HRESULT;

var

hInst: HWND;

lRes: Cardinal;

MSG: Integer;

pDoc: IHTMLDocument2;

ObjectFromLresult: TObjectFromLresult;

begin

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;

//在type加TObjectFromLResult 定义

type

TObjectFromLResult = function(LRESULT: lResult; const IID: TIID; WPARAM: wParam; out pObject): HRESULT; stdcall;