IBrowser :: get_LocationURL的问题 [英] problem with IBrowser::get_LocationURL

问题描述

大家好！我的小应用程序有问题.我处理了IE的单击，并希望获得IE所在的URL.调用"get_LocationURL"函数后，变量"bufferScript"的长度为0.有人可以告诉我此小代码中的错误在哪里吗?在此先感谢.

Hi all! there is a problem in my small application. I handle a click on IE, and want to get the URL in which IE is. After calling "get_LocationURL" function the length of variable "bufferScript" is 0. Can somebody tell me where the bug is in this small code?? thanks in advance.

	<br />
typedef HRESULT (WINAPI *AttachCtrl)(IUnknown*, HWND,IUnknown**);<br />
<br />
LRESULT CHookDlg::OnMouseLBDown( WPARAM, LPARAM lParam )<br />
{<br />
	IWebBrowser2 *pIwb;<br />
	OleInitialize( 0 );<br />
	CoCreateInstance( CLSID_InternetExplorer, NULL, CLSCTX_SERVER,IID_IWebBrowser2, (void**)&pIwb );<br />
	if( pIwb )<br />
	{<br />
		VARIANT vEmpty;<br />
		VARIANT_BOOL bBusy = VARIANT_TRUE;<br />
		VariantInit( &vEmpty );<br />
<br />
		HINSTANCE hIEInstance = LoadLibrary( "atl.dll" );<br />
<br />
		AttachCtrl AtlAxAttachControl = (AttachCtrl)GetProcAddress( hIEInstance, "AtlAxAttachControl" );<br />
<br />
		AtlAxAttachControl( pIwb, ::GetForegroundWindow(), 0 );<br />
<br />
		BSTR bufferScript;<br />
		pIwb->get_LocationURL( &bufferScript );<br />
		pIwb->get_Name( &bufferScript );<br />
		pIwb->get_Path( &bufferScript );<br />
<br />
<br />
		pIwb->Quit();<br />
		pIwb->Release();<br />
<br />
		FreeLibrary( hIEInstance );<br />
	}<br />
<br />
	return 0;<br />
}<br />

P.S.
在Pallini的答案"之后，我添加了代码行，并调用了2个函数:get_Name& get_Path.他们的结果还可以.因此，问题仅在get_LocationURL中.

P.S.
After Pallini''s "answer" I added to lines, with calling 2 functions: get_Name & get_Path. Their results is OK. So the problem only in get_LocationURL.

推荐答案

为什么不检查get_LocationURL方法的返回值?
:)

Why don''t you check get_LocationURL method return value?
:)

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