VS7.0 and Above: SafeArray, VB.NET and VC++ - ATL / WTL / STL Discussion Boards

_AnsHUMAN_ 15-Jan-07 22:34

15-Jan-07 22:34

Hi All,
I am developing a toolbar for Outlook. I have placed an edit box on the tool bar. Now I want that when I change the text in the edit box, I should be able to handle the EN_CHANGE notification. Can somebody tell how this can be done?
Currently when I press the enter key I am able to get the value from the edit box, this is also achievable when I press tab and click with the mouse anywhere else on the screen.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Outlook Toolbar

Laxman Auti30-Jan-07 22:18

Laxman Auti

30-Jan-07 22:18

Try by using overiding of Invoke method. Unsure | :~

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

subclassing without resource

merlinos15-Jan-07 11:12

merlinos

15-Jan-07 11:12

Hi,

I need to customize the CEdit control to use character masks. I thought of subclassing but the CEdit controls I need to customize are on a view that is created from scratch, so there is no CEdit resource to attach to with a GetDlgItem. The existing CEdit controls are created with a call to Create().
How can I subclass without a resource?

Thanks,
Merlinos

Re: subclassing without resource

prasad_som15-Jan-07 19:12

prasad_som

15-Jan-07 19:12

merlinos wrote:
How can I subclass without a resource?

Use CWnd::SubclassWindow.
BTW, this question is appropriate for VC++ forum.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: subclassing without resource

Jörgen Sigvardsson15-Jan-07 21:14

Jörgen Sigvardsson

15-Jan-07 21:14

He's probably using WTL, otherwise he wouldn't have bothered asking the question in this forum, nor would he even ask this very question, as subclassing is automatic in MFC. Hence, his question is very much appropriate for this forum.

--
Verletzen zerfetzen zersetzen zerstören
Doch es darf nicht mir gehören
Ich muss zerstören

Re: subclassing without resource

prasad_som15-Jan-07 21:31

prasad_som

15-Jan-07 21:31

Joergen Sigvardsson wrote:
He's probably using WTL

Probably !

Seeing mention of CEdit leads my assumption.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: subclassing without resource

Jörgen Sigvardsson15-Jan-07 21:14

Jörgen Sigvardsson

15-Jan-07 21:14

See: CWindow::SubclassWindow()

--
Verletzen zerfetzen zersetzen zerstören
Doch es darf nicht mir gehören
Ich muss zerstören

VS7.0 and Above: SafeArray, VB.NET and VC++

Jeffrey Walton13-Jan-07 6:26

Jeffrey Walton

13-Jan-07 6:26

Hi All,

The following is giving me fits in VB.NET. Any ideas how to make it work?

*************
VB.NET

Dim rng as PseudoRNG
rng = new PseudoRNG()

dim a(10) as Long

rng.GenerateBlock( a )
...
*************

What I've tried (and how it does not work is listed below). Following that are KB article references... KB314708 does not resolve (even though it is supposed to). It is also broken on VS2005/.NET 2.0.

Does anyone know how to pass an array? Obvioulsy, I do not.

Jeff

****
HRESULT GenerateBlock([in, out] SAFEARRAY(VARIANT) * Block);
System.Runtime.InteropServices.SafeArrayTypeMismatchException

HRESULT GenerateBlock([in, out] SAFEARRAY(VARIANT*) * Block);
System.Runtime.InteropServices.SafeArrayTypeMismatchException

HRESULT GenerateBlock([in, out] SAFEARRAY(VT_DISPATCH) * Block);
Compile Problem

HRESULT GenerateBlock([in, out] SAFEARRAY(IDispatch) * Block);
SAFEARRAY(interface pointer) doesn't work using midl generated proxy
System.Runtime.InteropServices.SafeArrayTypeMismatchException

HRESULT GenerateBlock([in, out] SAFEARRAY(IDispatch*) * Block);
SAFEARRAY(interface pointer) doesn't work using midl generated proxy
System.Runtime.InteropServices.SafeArrayTypeMismatchException

HRESULT GenerateBlock([in, out] SAFEARRAY(long) * Block);
System.Runtime.InteropServices.SafeArrayTypeMismatchException
****
SafeArrayTypeMismatchException Error Message When You Invoke a COM Method[^]

Using OLE Automation Marshaler for 16/16 & 16/32 COM Interface[^] (should not even apply)

alter class-style before creation in ATL/WTL ?

shuaicarr9-Jan-07 21:39

shuaicarr

9-Jan-07 21:39

When in MFC ,we can change the wndclass structure before a window is created . for example :

BOOL CDlgFrame::PreCreateWindow(CREATESTRUCT& cs)
{
if( !CMDIChildWnd::PreCreateWindow(cs) )
return FALSE;
cs.style &= ~FWS_ADDTOTITLE ;
return TRUE;
}

Is there a counterpart in ATL/WTL ? or how could i implement the same effect ? Blush | :O

Re: alter class-style before creation in ATL/WTL ?

Stephen Hewitt10-Jan-07 12:24

Stephen Hewitt

10-Jan-07 12:24

As far as I can see FWS_ADDTOTITLE is MFC specific. As to setting window styles the CWindow::Create methods allow these to be specified when creating the window. CWindowImpl also allows default styles to be specified through the TWinTraits template argument.

Steve

Interface Definition (No Implementation)

Jeffrey Walton9-Jan-07 14:20

Jeffrey Walton

9-Jan-07 14:20

Hi All,

I want to implement an Interface only (no class backing it) in an ATL Dll. It will be similar to ISupportErrorInfo, but without an implementation. In pure C++, this would be a pure virtual base class. This is sometimes loosely called 'the contract'. In my library, I would then like my objects to derive from it:

class ATL_NO_VTABLE CWidget :
   public CComObjectRootEx<CComSingleThreadModel>,
   ...
   public IMyPureVirtualBase,
   public IDispatchImpl<IWidget, &IID_IWidget, &LIBID_WidgetLibrary>
{
...
BEGIN_COM_MAP(CWidget)
   ...
   COM_INTERFACE_ENTRY(IMyPureVirtualBase)
   COM_INTERFACE_ENTRY(IDispatch)
END_COM_MAP()
};

How do I add this through Visual Studio? I can add a simple object, but it seems to get an implementation.

Jeff

Re: Interface Definition (No Implementation)

Stephen Hewitt9-Jan-07 15:40

Stephen Hewitt

9-Jan-07 15:40

I assume you mean a COM interface. A COM interface -- from a C++ perspective -- is just an abstract class with certain restrictions (for example, only virtual methods, no destructor, etc). Obviously other languages can not consume a C++ class however. Normally you describe the interface in an IDL file and use MIDL to create a type library from it. Languages that support COM can consume type libraries and MIDL will create an abstract class that can be consumed by C++ (or you can use #import to use the type library).

Steve

Re: Interface Definition (No Implementation)

Michael Dunn9-Jan-07 22:09

Michael Dunn

9-Jan-07 22:09

Add a class with the wizard and delete whatever method implementations you don't want.

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

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

Toolbars on internet explorer and tooltips

Member 35534028-Jan-07 23:05

Member 3553402

8-Jan-07 23:05

How to create toolbars on ie and how to add tooltips for buttons using ATL

RAMU

Re: Toolbars on internet explorer and tooltips

Michael Dunn9-Jan-07 0:39

Michael Dunn

9-Jan-07 0:39

Erik Thompson has some articles on toolbars. Here's one: http://www.codeproject.com/atl/rbdeskband.asp[^]

what's theClass for in BEGIN_MSG_MAP(theClass)?

rockonedge8-Jan-07 21:54

rockonedge

8-Jan-07 21:54

I find that in ATL, the macro BEGIN_MSG_MAP(theClass) is defined this way:

#define BEGIN_MSG_MAP(theClass) \<br />
public: \<br />
	BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& lResult, DWORD dwMsgMapID = 0) \<br />
	{ \<br />
		BOOL bHandled = TRUE; \<br />
		hWnd; \<br />
		uMsg; \<br />
		wParam; \<br />
		lParam; \<br />
		lResult; \<br />
		bHandled; \<br />
		switch(dwMsgMapID) \<br />
		{ \<br />
		case 0:

Interestingly, theClass is not used anywhere, then what's the use of theClass here?

Thanks.

Re: what's theClass for in BEGIN_MSG_MAP(theClass)?

prasad_som9-Jan-07 1:39

prasad_som

9-Jan-07 1:39

Strange !

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: what's theClass for in BEGIN_MSG_MAP(theClass)?

Stuart Dootson9-Jan-07 9:00

Stuart Dootson

9-Jan-07 9:00

Probably either a) consistency with MFC map macros, or b) in case it's needed in the future?

Re: what's theClass for in BEGIN_MSG_MAP(theClass)?

Steve S16-Jan-07 5:07

Steve S

16-Jan-07 5:07

It's probably for compatibility with MFC Smile | :)

Steve S
Developer for hire

Re: Displaying a ToolTip

User 2155973-Jan-07 23:56

User 215597

3-Jan-07 23:56

Wrong forum. Please try VC++ forum to get quicker answer to this.

S o h a i l K a d i w a l a

To Err Is Human; to Debug, Divine

modified 21-Apr-21 21:01pm.

Template library for design patterns

rahulmballal2-Jan-07 8:41

rahulmballal

2-Jan-07 8:41

Hey All,
A very happy new year to you all. I am working on GoF design patterns. I want to know if it is feasible or possible to make a library like STL for design patterns using .net Generics? If there are some existing projects like this can someone please send me links to it?

thanks
RB

Re: Template library for design patterns

Kevin McFarlane13-Jan-07 9:33

Kevin McFarlane

13-Jan-07 9:33

I'm not clear what you are asking. What have GoF design patterns got to do with generics? Or are you asking whether there is something similar to STL (i.e., algorithms and containers) but for .NET generics?

Kevin

Tutorial for ATL

$uresh $hanmugam29-Dec-06 22:20

$uresh $hanmugam

29-Dec-06 22:20

Hi All,

I need to learn about ATL from the basic.Anyone can tell me the good tutorial for ATL.

Thankx in advance..

Re: Tutorial for ATL

Jörgen Sigvardsson5-Jan-07 12:23

Jörgen Sigvardsson

5-Jan-07 12:23

This[^] yielded a lot of hits...

Re: Tutorial for ATL

ThatsAlok22-Jan-07 19:28

ThatsAlok

22-Jan-07 19:28

ab_wahab wrote:
ttp://rapidshare.de/files/14816390/Wordware_.Developers.Workshop.to.COM.and.ATL.3.0._2000_.LiB.rar.html

you can be in deep trouble dude!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
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