🚀 go-pugleaf

    HWND Handle = FindWindow("ApplicationClass", NULL);
    if(Handle)
    {
        BringWindowToTop(Handle);            // Bring Application to Top
        keybd_event(VK_F5, 0, 0, 0);
// Down
        keybd_event(VK_F5, 0, KEYEVENTF_KEYUP, 0);    // Up
    }
    else
    {
        ShowMessage("Invalid Handle. Application might not be open");
    }

Rodolfo

"RaynorPao" <RaynorPao.nospam@nospam.pchome.com.tw> wrote in message
news:3eadfe5c@newsgroups.borland.com...
> Hi all:
>
> I can press key "F5" to refresh Explorer.
> How can I do this programmatically?
>
> Thanks.
> RaynorPao.
>
>

For internet Explorer the Class will be "IEFrame"

HWND Handle = FindWindow("IEFrame", NULL);

Rodolfo

Hi Rodolfo:

Thanks for your reply.
But, I don't know how to get the HWND of Explorer.
Is there an API can do this?

Thanks.
RaynorPao.

"StarCinema - Rodolfo Frino" <starcinema@stargate.com> ���g��l��
news:3eae1f36@newsgroups.borland.com...
> For internet Explorer the Class will be "IEFrame"
>
> HWND Handle = FindWindow("IEFrame", NULL);
>
> Rodolfo
>
>

You use the FindWindow() API to get the handle of
an application.

HWND Handle = FindWindow(WindowClass, NULL);

In this case the application is Internet Explorer,
whose WindowClass is "IEFrame", therefore
you get the handle of Explorer with this line:

HWND Handle = FindWindow("IEFrame", NULL);

Rodolfo


"RaynorPao" <RaynorPao.nospam@nospam.pchome.com.tw> wrote in message
news:3eae2f1e@newsgroups.borland.com...
> Hi Rodolfo:
>
> Thanks for your reply.
> But, I don't know how to get the HWND of Explorer.
> Is there an API can do this?
>
> Thanks.
> RaynorPao.
>
> "StarCinema - Rodolfo Frino" <starcinema@stargate.com> ���g��l��
> news:3eae1f36@newsgroups.borland.com...
> > For internet Explorer the Class will be "IEFrame"
> >
> > HWND Handle = FindWindow("IEFrame", NULL);
> >
> > Rodolfo
> >
> >
>
>

Hi Rodolfo:

Thanks for your reply.
But, I don't want to get the HWND of Internet Explorer(Web Browser).
I just want to get the HWND of Explorer(File System).
Would you please tell me how to get the HWND of Explorer?

Thanks.
RaynorPao.

"StarCinema - Rodolfo Frino" <starcinema@stargate.com> ���g��l��
news:3eae3762@newsgroups.borland.com...
> You use the FindWindow() API to get the handle of
> an application.
>
> HWND Handle = FindWindow(WindowClass, NULL);
>
> In this case the application is Internet Explorer,
> whose WindowClass is "IEFrame", therefore
> you get the handle of Explorer with this line:
>
> HWND Handle = FindWindow("IEFrame", NULL);
>
> Rodolfo

> I just want to get the HWND of Explorer(File System).

Perhaps "ExploreWClass" (not tested).

Steve.

>     HWND Handle = FindWindow("ApplicationClass", NULL);
>     if(Handle)
>     {
>         BringWindowToTop(Handle);            // Bring Application to Top
>         keybd_event(VK_F5, 0, 0, 0);
> // Down
>         keybd_event(VK_F5, 0, KEYEVENTF_KEYUP, 0);    // Up
>     }
>     else
>     {
>         ShowMessage("Invalid Handle. Application might not be open");
>     }



This will fail when more one one session of Internet Explorer is 
running, I think. Haven't tested it.

Ron Sommer

> This will fail when more one one session of Internet Explorer is
> running, I think. Haven't tested it.
>
> Ron Sommer


No, it won't fail. It will act on the topmost "ClassName" ("IEFrame" in this
case) window

Rodolfo
Stargate
http://members.optusnet.com.au/~rodolfofrino/

Sorry RaynorPao, I thought you were referring to Internet Explorer
If you want to refresh the Windows Explorer then you have to use
the "ExploreWClass" Window Class, and the call is:

   HWND Handle = FindWindow("ExploreWClass", NULL);

If you have more than one Windows Explorer instances running, the code will
affect the topmost
"ExploreWClass" Window (the one with the highest Z order)

Regards
Rodolfo

> Thanks for your reply.
> But, I don't want to get the HWND of Internet Explorer(Web Browser).
> I just want to get the HWND of Explorer(File System).
> Would you please tell me how to get the HWND of Explorer?
>
> Thanks.
> RaynorPao.

Hi Steve:

Yes!! You are right!!
Thank you very much.
RaynorPao.

"Steve" <steve_alettoANTI@SPAMhotmail.com> ���g��l��
news:3eae4a95@newsgroups.borland.com...
> > I just want to get the HWND of Explorer(File System).
>
> Perhaps "ExploreWClass" (not tested).
>
> Steve.
>
>

Hi Rodolfo:

^_^...It's OK!!

Thank you very much.
RaynorPao.

"StarCinema - Rodolfo Frino" <starcinema@stargate.com> ���g��l��
news:3eae784a@newsgroups.borland.com...
> Sorry RaynorPao, I thought you were referring to Internet Explorer
> If you want to refresh the Windows Explorer then you have to use
> the "ExploreWClass" Window Class, and the call is:
>
>    HWND Handle = FindWindow("ExploreWClass", NULL);
>
> If you have more than one Windows Explorer instances running, the code
will
> affect the topmost
> "ExploreWClass" Window (the one with the highest Z order)
>
> Regards
> Rodolfo

If you want to send a windows message to all instances of an application
(for example the WM_CLOSE message)
you can use this callback function

BOOL CALLBACK CloseAllWindowsByClassName(HWND Handle, LPARAM lParam)
{
    char WindowClassName[256] = {0};

    if (GetClassName(Handle, WindowClassName, 255))
        if (stricmp(WindowClassName, (char*)lParam) == 0)
            PostMessage(Handle, WM_CLOSE, 0, 0);

    return TRUE;
}



void __fastcall TForm1::Button1Click(TObject *Sender)
{
    // Select your Application
    //String WindowClassName = "Notepad";
    //String WindowClassName = "IEFrame";
    String WindowClassName   = "ExploreWClass";

    EnumWindows((WNDENUMPROC)CloseAllWindowsByClassName,
(LPARAM)WindowClassName.c_str());
}

Rodolfo
Stargate Software


> This will fail when more one one session of Internet Explorer is
> running, I think. Haven't tested it.
>
> Ron Sommer
>
>