C / C++ / MFC

Re: Derived Class Function Pointer Error

5-Jan-10 0:24

Why don't you use polymorphism for that?
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J Forde5-Jan-10 4:39

J Forde

5-Jan-10 4:39

I thought I was doing that, however, turns out I was doing it in reverse - against the derived class - instead of the base class.

I've resolved the problem by declaring Base references and instantiating the derived class and casting where appropriate.

Thanks

help me please!

nenfa4-Jan-10 22:23

nenfa

4-Jan-10 22:23

how to mimic the operation of refurbishing desktop like the right-context-menu way?
in other words, you right-click on the desktop, there'll be the context menu which has the fresh button, you press fresh button to force refurbishing the desktop.
how can i mimic this operation through code.

Re: help me please!

KingsGambit4-Jan-10 23:35

4-Jan-10 23:35

You can write shell extension for adding additional items to context menu. For details you can refer The Complete Idiot's Guide to Writing Shell Extensions - Part I[^]

Re: help me please!

nenfa4-Jan-10 23:48

nenfa

4-Jan-10 23:48

what i want is to reach the same effect by some simple codes but without any gui codes.

Re: help me please!

David Crow5-Jan-10 3:30

David Crow

5-Jan-10 3:30

It's not as simple as that. There's not a WM_REFRESH type of message that you can send to a window and have it refresh itself. Using Spy++, you can see what messages are sent to the desktop's list control and how it responds. In order to mimic this, I suspect a shell extension would be in order.

"One man's wage rise is another man's price increase." - Harold Wilson

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_variant_t conversion

MsmVc4-Jan-10 22:10

MsmVc

4-Jan-10 22:10

Hi All

Can i convert _variant_t to binary?Please give me advice.

CPallini4-Jan-10 22:19

4-Jan-10 22:19

Data is already in binary form, you know. What kind of conversion do you really need? Could you make an example?
Smile | :)

MsmVc4-Jan-10 22:30

MsmVc

4-Jan-10 22:30

Thanks for reply
i am useing

ADODB::_RecordsetPtr rSet;

to get values from MS Access through this code.When Ms Access datatype is adLongVarBinary.

(j is indext number)
_variant_t vtValue;
vtValue =rSet->Fields->GetItem(j)->Value;

Then i am geting values like this

vtValue laues like this.
safearray = safearray of UI1 = [27609](21 ' ',28 ' ',45 '-',0,2 ' ',0,0,0,10 '
',0,15 ' ',0,20 ' ',0,30 ' ',0,255 'ÿ',255 'ÿ',255 'ÿ',255 'ÿ',87 'W',111 'o',114 'r',107 'k',115 's',104 'h',101 'e',101 'e',116 't',0,69 'E',120 'x',99 'c',101 'e',108 'l',46 '.',83 'S',10...

So how can i get this values in redable formate.

CPallini4-Jan-10 22:54

4-Jan-10 22:54

What do you intend with 'readable format'? What's the array is supposed to contain?
Smile | :)

Madhu Nair4-Jan-10 23:33

Madhu Nair

4-Jan-10 23:33

I think you are trying to get values from a SAFEARRAY[^]

I suggest you to read this (How To Pass Arrays Between Visual Basic and C[^]) article, to get a starting point in SAFEARRAY handling.

KingsGambit4-Jan-10 22:19

4-Jan-10 22:19

What is meant by converting _variant_t to binary?

Customize EditBox

kumar sanghvi4-Jan-10 21:55

kumar sanghvi

4-Jan-10 21:55

Hi,
Please suggest me any sample which is using Subclassing of CEdit class...

Re: Customize EditBox

Nelek4-Jan-10 22:07

Nelek

4-Jan-10 22:07

Here[^] you have a lot.

Regards.
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Global variables

Pryabu4-Jan-10 19:45

Pryabu

4-Jan-10 19:45

Hi all,

How to prevent usage of global variables from other files.

thanks,

SandipG 4-Jan-10 20:07

SandipG

4-Jan-10 20:07

Check here[^]..
I hope it helps.

Regards,
Sandip.

KingsGambit4-Jan-10 20:08

4-Jan-10 20:08

I think you can declare the global variables as static so that the access is restricted to specific translation units.

CPallini4-Jan-10 20:36

4-Jan-10 20:36

You should use the static storage class: from MSDN [^]

When modifying a variable or function at file scope, the static keyword specifies that the variable or function has internal linkage (its name is not visible from outside the file in which it is declared).

Generic Office 2007 _Application Interface class

Avi Berger5-Jan-10 16:45

Avi Berger

5-Jan-10 16:45

As people have already correctly answered you, using a static specification does this just fine.

If you are interested ( for culture maybe? ) there is another approach you may encounter. That is to put the variable definition in an anonymous namespace ( also known as an unnamed namespace[^] ).

eight4-Jan-10 19:39

eight

4-Jan-10 19:39

Using VS2008, I've created an MFC TypeLib class, CApplication from _Application Interface in Ms Word 12.0 Object Library <8.4>. As expected, the class works with my Word 2007, but doesn't with Excel, PowerPoint etc.

My question, is there a way for me to create a CApplication class that caters to all the Ms Office family? I'm not looking at automating application specific functions, only common function (e.g: Save, Exit)

Re: Generic Office 2007 _Application Interface class

Migounette4-Jan-10 22:26

Migounette

4-Jan-10 22:26

You cannot do it.

It's a COM interface and all applications have a different signture and functions.
So you need one per application and per version.

Re: Generic Office 2007 _Application Interface class

eight5-Jan-10 14:49

eight

5-Jan-10 14:49

Too bad. I was hoping for an _Application interface that's being shared among all Office Apps (eg:_CommandBars). Does this mean I have to create individual dll for each Office App? I saw a few com addin that's available on my Word, Excel and PowerPoint. I don't think they have 3 separate dlls. Any idea how they are doing it?

Add icons to menu bar

Abinash Mohanty4-Jan-10 17:41

Abinash Mohanty

4-Jan-10 17:41

Hi All,
I have created the menu.Can anybody tell me how to add icons to menu items?

Thanks,
Abinash

Re: Add icons to menu bar

KingsGambit4-Jan-10 17:56