ATL / WTL / STL Discussion Boards

Re: Key handling in a windowless control [modified]

Stephen Hewitt30-May-06 13:45

30-May-06 13:45

When using the method I gave make sure that IOleInPlaceActiveObject::TranslateAccelerator returns S_FALSE (if you've implemented it) so it doesn't swallow the event.

Steve

Re: Key handling in a windowless control [modified]

TClarke31-May-06 0:21

TClarke

31-May-06 0:21

Unfortunately, my my overridden IOleInPlaceActiveObject::TranslateAccelerator isn't being called at all. Neither are any other methods in my control, except during the control's initialisation and shutdown. I tried calling m_spInPlaceSite->SetCapture(TRUE); to get things going and I've tried Accelerators. I may have to resort to implimenting a keyboard hook, seems a bit like over kill though.

Tom

Re: Key handling in a windowless control [modified]

Stephen Hewitt31-May-06 13:43

Stephen Hewitt

31-May-06 13:43

I made a control before I posted my original suggestion and all worked fine in IE. There is obviously something fishy with your control. Using a hook might work but its ugly as it ignores the root problem. Can you post your control's source somewhere?

Steve

Re: Key handling in a windowless control [modified]

TClarke31-May-06 23:53

TClarke

31-May-06 23:53

Hi Steve
I don't have a public site and codeproject's email does not supply an attachment facility. If you email me your email address I can send the code that way.

If not, my control can easily be recreated by starting new ATL project, adding acontrol, register for the windows messages WM_CHAR and WM_LBUTTONDOWN and overriding the following methods in the control's header.

STDMETHOD(TranslateAccelerator)(LPMSG pMsg)
{
return S_OK;
}
// IOleInPlaceObjectWindowless
//
STDMETHOD(OnWindowMessage)(UINT msg, WPARAM wParam, LPARAM lParam, LRESULT *plResult)
{
return S_OK;
}

Thanks again for your concern

Tom

Re: Key handling in a windowless control [modified]

Stephen Hewitt1-Jun-06 14:05

Stephen Hewitt

1-Jun-06 14:05

ActiveX controls made by the ATL wizard already have an implementation of IOleInPlaceActiveObject::TranslateAccelerator inherited from the ATL class IOleInPlaceActiveObjectImpl; but you're overriding it and returning S_OK. You're making two mistakes here:
1. You're not calling the base class so you're short circuiting all the code in ATL's implementation.
2. By returning S_OK you're telling the controls container (IE) not to process the message further.

Remove all IOleInPlaceActiveObject methods you've put in from your control; ATL implements this low level interface for you. If you want to pre-translate a message add a function with the following signature to your control.

BOOL PreTranslateAccelerator(LPMSG /*pMsg*/, HRESULT& /*hRet*/)

If you don't handle a message in this function you should return FALSE.

A similar situation exists for the IOleInPlaceObjectWindowless inteface. The ATL wizard has already done the all the heavy lifting in the methods inherited from the ATL class IOleInPlaceObjectWindowlessImpl; remove all the methods you've added from this interface (like OnWindowMessage) and handle messages with message maps using the wizard like I explained a while ago.

Essentially your problem is you're trying to do too much: ATL handles many of the low level details for you but you’re cutting it off at the knees.

Good luck.

Steve

Re: Key handling in a windowless control [modified]

TClarke1-Jun-06 23:24

TClarke

1-Jun-06 23:24

Hi Steve,

Thanks again, and your quite right, the overloaded functions will cause trouble for ATL but my aim was simply to watch using breakpoints for a function that gets entered. My problem is that none of these functions get entered at all, included the message handlers that the wizard created. It's as though I'm never getting focus.
With this in mind I'm now looking at ways to try to coax IE into paying attention. The functions GetMiscStatus and GetControlInfo seem mainly responsible in this area.

thank you again

tom

Re: Key handling in a windowless control [modified]

Stephen Hewitt5-Jun-06 14:27

Stephen Hewitt

5-Jun-06 14:27

If you're going to do this to watch breakpoints get hit you should still cause the base class implementation.

Steve

Re: Key handling in a windowless control [modified]

TClarke5-Jun-06 23:01

TClarke

5-Jun-06 23:01

Stephen Hewitt wrote:
cause the base class implementation

Could you elaborate please. Unsure | :~

tom

Re: Key handling in a windowless control [modified]

Stephen Hewitt6-Jun-06 1:33

Stephen Hewitt

6-Jun-06 1:33

Take the following function you added for example:

STDMETHOD(TranslateAccelerator)(LPMSG pMsg)
{
    return S_OK;
}

If you search ATL for this you'll find your control already inherits an implementation from IOleInPlaceActiveObjectImpl. Given this your function should look like this:

STDMETHOD(TranslateAccelerator)(LPMSG pMsg)
{
    return IOleInPlaceActiveObjectImpl<CYourClassName>::TranslateAccelerator(pMsg);
}

Note that CYourClassName is the name of your class

Steve

Re: Key handling in a windowless control [modified]

TClarke6-Jun-06 2:02

TClarke

6-Jun-06 2:02

Thanks Steve, I was clearly on the wrong line there.

I'm still not able to cause those functions to be entered though. With the main requirement of my control being that all keyboard events in IE be caught from the offset I may have to employ a subclassing solution I've written as a backup. I'm amazed at how uncooperative this ATL business can be. Great when it works though.

Tom

Re: Key handling in a windowless control [modified]

Stephen Hewitt6-Jun-06 3:25

Stephen Hewitt

6-Jun-06 3:25

What exactly are you trying to do? I've never had any trouble handling keyboard events.

Steve

Re: Key handling in a windowless control [modified]

TClarke6-Jun-06 3:40

TClarke

6-Jun-06 3:40

I'm working on a Web application using Java Servlets with an embedded ActiveX control to bridge the functionality gap.

The App is required to behave and look nothing like the normal IE GUI. Included in this makeover is the issue of controling the app through key combinations eg CTRL F for searching, F1 for help.
I've used JavaScript to block and redirect all the possible commands, except F1 and ALT Home. These two appear to resist even the most concerted efforts. as a result I'm forced to look to the ActiveX control to take me beyond the sand box.
The control will never have direct focus as it's got no window and only resides on the page for such tasks as printing etc.

Thanks again Steve

tom

BandObject Question [modified]

hung_ngole25-May-06 1:53

hung_ngole

25-May-06 1:53

Hi all,
Have you ever write the plugin to IE using BandObject (here [^])?

I have read the above article and try to change the original HTML page back from server. I use the code as below:

mshtml.HTMLDocumentClass doc = (HTMLDocumentClass)Explorer.Document;
doc.documentElement.innerHTML = ".........." //My HTML tags

Then the exception appear:
"Could not set the innerHTML property. Invalid target element for this operation."

Have you got any ideas about this exception?
Thanks in advance,

Hung

-- modified at 7:55 Thursday 25th May, 2006

SendMessage not working

HarishDixit25-May-06 0:24

HarishDixit

25-May-06 0:24

Hello friends,

I want to get button info of a toolbar button attached to Internet explorer,
using sendmessage function as:

TBBUTTONINFO tbbi;

::SendMessage(hwndFFToolBar,TB_GETBUTTONINFO,(WPARAM)nId,(LPARAM)&tbbi);

nId is ID of toolbar button.

It is not working?

please reply.

Re: SendMessage not working

Michael Dunn25-May-06 6:58

Michael Dunn

25-May-06 6:58

tbbi is uninitialized. You need to set cbSize and dwMask to tell the toolbar what info you want.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Custom Frame Window

HakunaMatada24-May-06 21:22

HakunaMatada

24-May-06 21:22

I would like to change the look of the Frame window to something of my liking. For example, change the titlebar, system buttons, the color of the border of the frame and etc, etc. I did come across a few articles in Codeproject where the title bar has been customized, but that's only the title bar. I would also like to customize the border of the Frame Window and still have all the functionality of the default frame border.

Can anyone help me? Smile | :)

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

Re: Custom Frame Window

wpapers19-Aug-06 23:24

wpapers

19-Aug-06 23:24

now,i have the very problem!i found many stuff but can't resolve it!
i want to change the color of toolbar,or change the whole frame

Steps to create a simple ATL DLL using the VS2005 AppWizard...

Defenestration23-May-06 15:57

Defenestration

23-May-06 15:57

I found an article on CP, "How to write a Super compact Super Fast C++ Dll for Visual Basic" which explains how to use ATL to create a DLL.

When I use the VS 2005 AppWizard to create an ATL DLL, it ends up creating a lot more files in the Solution Explorer than are present in the sample project from the article I mention. For example, after using the AppWizard I end up with the following in the Solution Explorer Treeview:

http://img130.imageshack.us/img130/5752/testatldllsolutionexplorer1hn.png[^]

whereas the sample project only has the following in the Solution Explorer Treeview:

http://img442.imageshack.us/img442/7792/tvb4jn.png[^]

I'm guessing the difference is probably because the sample file project was created in VC++ 6.

In the example project, the automatically created functions:

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

have been commented out in tvb.cpp and the entries removed from tvb.def, but in the VS 2005 project they are not commented out and the entries are still in the .def file. The sample project also has the following line commented out in tvb.idl:

//import "ocidl.idl"

What does this line do, and what does the line import "oaidl.idl" do ?

All I want to do is create a DLL which exports my own functions. For example, AddTwoInts(int a, int b).

1) Of the automatically generated files from the VS 2005 ATL AppWizard, what can be safely deleted ?

2) Once that's done, do I only need to add the following to the end of ATL_Test_DLL.cpp

extern "C"
{
int__stdcall AddTwoInts( int a, int b )
{
return( a + b );
}
}

followed by adding the following to the end (ie. after the line with "EXPORTS") of ATL_Test_DLL.def

AddTwoInts

Do I need to do anything else ?

IE plugin

hung_ngole22-May-06 15:41

hung_ngole

22-May-06 15:41

Hi all,
I have written a plugin to IE. Now I want when user press "Enter" key or click on "Go" button, my plugin will catch the URL on the Address Editbox. How can I do that?
Thanks,

Hung

Re: IE plugin

Michael Dunn23-May-06 6:35

Michael Dunn

23-May-06 6:35

You can write a BHO and handle the BeforeNavigate2 event.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Re: IE plugin

hung_ngole24-May-06 6:55

hung_ngole

24-May-06 6:55

Thanks Mike,
I have done successful.
Now I want my plugin can return the data for IE window to show on the IE window.
BeforeNavigate2()
{
//Code to redirect to my page and get the content back from the server
......................
//How can I show the content on the IE Window ???
}
Thanks in advance,

Hung

COM+ noncreatable and IObjectContext

sameeraperera21-May-06 18:00

sameeraperera

21-May-06 18:00

Hi,

In an ATL COM+ application how do I instantiate a well-behaved COM+ object marked as noncreatable?

I read that when instantiating COM+ applications the right way to do it is using the IObjectContext::CreateInstance rather than using CoCreateInstance. However neither is available when using noncreatalbe objects.

If I do it using CComPtr will the object be created in the current context and therefore be well behaved?

Thanks.

Why different results in Debug and Release Modes

NiceNaidu19-May-06 1:39

NiceNaidu

19-May-06 1:39

Hi Friends,

These days i am going through the nice artciles of the ATL Under Hood.

Can anyone of u please have a look over the Program no 28 in the following link http://www.thecodeproject.com/atl/atl_underthehood_2.asp[^]

and give me the reason for different outputs in different modes(Debug / Release).

Though some explaination is given i am unable to understand.

Thanks in advance.

Appu..
"If you judge people, you have no time to love them."

Re: Why different results in Debug and Release Modes

toxcct22-May-06 7:07

toxcct

22-May-06 7:07

did you read this[^] ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Memory problem

bujji_bec18-May-06 21:33

bujji_bec

18-May-06 21:33

hi friends,

i got Different Problem.

i created one Dll(win32 application). i create one project and put main().

#include "ini.hpp"

int main()
{
char *cp,*cp1;
Config Objcon("../","rrr.ini");
Section objsec = Objcon["server"];
cp=objsec["ip"];
cp1=objsec["port"];
cout<

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.