Question about classes - C / C++ / MFC Discussion Boards

How can i disable pressing of special characters(@,#,$,%,^,&,*,~,!) on Editbox control?

Le@rner24-Jul-08 19:24

24-Jul-08 19:24

Hi all,

Please anyone can tell me how can i stop enter special cahracters (@,#,$,%,^,&,*,~,!) in Editbox.

Thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: How can i disable pressing of special characters(@,#,$,%,^,&,*,~,!) on Editbox control?

Yajnesh Narayan Behera24-Jul-08 19:52

Yajnesh Narayan Behera

24-Jul-08 19:52

You can perform it in three ways.

One is override PreTranslateMessage.

Another one is to subclass your Editbox.

Also there is another one derive your custom editbox from CEditBox, on WM_CHAR message you can disbale special character.

Re: How can i disable pressing of special characters(@,#,$,%,^,&,*,~,!) on Editbox control?

_AnsHUMAN_ 24-Jul-08 19:55

_AnsHUMAN_

24-Jul-08 19:55

Subclass CEdit and override subclass OnPreTranslate(). you can also do it with the EN_CHANGE event in your dialog class but that would require some logic of storing the string, comparing it with the previous one, finding if the new character is the one which you DON'T want etc etc.
Hope it helps.

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

_AnShUmAn_

Re: How can i disable pressing of special characters(@,#,$,%,^,&,*,~,!) on Editbox control?

Le@rner24-Jul-08 20:38

Le@rner

24-Jul-08 20:38

Can you show any example of this.

Thanks.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

Re: How can i disable pressing of special characters(@,#,$,%,^,&,*,~,!) on Editbox control?

User 248443724-Jul-08 23:29

User 2484437

24-Jul-08 23:29

Hi,

there is an excellent Codeproject article called CFilterEdit: Use Regular Expressions to filter your input by Ben Hanson. This can serve you well as a base clase for your problem.
http://www.codeproject.com/KB/edit/FilterEdit.aspx[^]

There are already some sample derived classes like
* CCurrencyEdit
* CDateTimeEdit
* CFloatEdit
* CIntEdit
* CUIntEdit
* CUIntRangeEdit
* CSpin

So long,
Stefan

Botton clicked on Pressing Tab Key.

Le@rner24-Jul-08 19:11

Le@rner

24-Jul-08 19:11

Hi all;

i m using this on PreTranslateMessage(MSG* pMsg)

if (pMsg->message == WM_KEYDOWN && (pMsg->wParam == VK_RETURN))
{
UINT CtrlID = ::GetDlgCtrlID( pMsg->hwnd );
// Check whether its that of your button.
if( CtrlID != IDOK &&
CtrlID != IDCANCEL && )
{
pMsg->wParam = VK_TAB;
}
}
for using both on Tab key and enter key on controls execpt button controls.

Now on presssing Tab key the button is clicked.
I dont want to press button on Tab key.

Please tell me what can i do?

I m waiting for ur valuable suggestions.

Thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

modified on Friday, July 25, 2008 1:17 AM

Re: Botton clicked on Pressing Tab Key. [modified]

Yajnesh Narayan Behera24-Jul-08 20:02

Yajnesh Narayan Behera

24-Jul-08 20:02

The simple solution just remove the tab stop style from button controls.

modified on Friday, July 25, 2008 2:19 AM

Question about classes

monsieur_jj24-Jul-08 16:30

monsieur_jj

24-Jul-08 16:30

Hi all,

I am making some connections with gsoap and services as I am looking into an example program I notice why this is possibe:

class CMyCurrencyConvertor  
{
public:
	CMyCurrencyConvertor();
	virtual ~CMyCurrencyConvertor();
	bool GetConversionRate(CString sFromCurrencyCode,CString sToCurrencyCode, double &dRate);
	bool GetConversionRate(ns1__Currency oFromCurrencyCode,ns1__Currency oToCurrencyCode, double &dRate);

Can someone explain to me the double meaning of GetConversionRate()

thanks,
Jayjay

Re: Question about classes [modified]

_AnsHUMAN_ 24-Jul-08 18:44

_AnsHUMAN_

24-Jul-08 18:44

That is function overloading. Allows you to use functions with the same name that do similar tasks. Based on the parameters of the function the compiler decides [runtime] which version of the function does it give a call to.
For eg: if you have to add two numbers irrespective of the parameters to the Add function you can simply write:

void Add(int a, int b);
//or
void Add(float a, float b);

it would really be a bit cryptic if you want to add two numbers and have to write functions as

void AddInt(int a, int b);
void AddFloat(float a, float b);

you would need hundreds of names in case you want to add different types of variables and write functions for them.
In essence function with the same name do similar tasks. In your case they give you the Conversion Rate with different parameter types

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

_AnShUmAn_

modified on Friday, July 25, 2008 1:03 AM

Modifying input stream of Video before playing it

tibiz24-Jul-08 11:10

tibiz

24-Jul-08 11:10

I need some quick help with this problem:

I've created a simple video player using DirectShow.
When I set playing a video file (f.e. wmv) I need do some file decryption (file is encrypted with own algorithm) before playing the movie stream - during reading data from file into DirectShow's stream buffer.

I need some ideas, how can I do this:

> Open video file > fread(buffer, bufflen) / apply buffer decryption -> redirect to DirectShow (apply filters, etc.) -> Play

Thank you for any support

tibiZ.net homepage

Re: Modifying input stream of Video before playing it

Mark Salsbery25-Jul-08 6:49

Mark Salsbery

25-Jul-08 6:49

For DirectShow, you'll probably need to write your own transform filter that
decrypts the raw file data and passes it downstream unencrypted.

Writing DirectShow Filters[^]

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Modifying input stream of Video before playing it

tibiz25-Jul-08 7:12

tibiz

25-Jul-08 7:12

Thanx, I've done it during today, but created a Source filter (file reader). The transform filter won't work as well

tibiZ.net homepage

Supplying new command line parameters to the executable already active

Hari-Adarapu24-Jul-08 9:34

Hari-Adarapu

24-Jul-08 9:34

Hello,

Is there a way to can send parameters through command line to the executable that is already active.

Let me explain my requirement clearly.

I have an exe which accepts command line parameters and one of the command line parameter is a file name. Now i need to input another file while the exe is still running.

Please let me know if there a way to acheive this?

Thanks,
Hari krishna.

Re: Supplying new command line parameters to the executable already active

CPallini24-Jul-08 9:49

CPallini

24-Jul-08 9:49

You probably need some sort of IPC [^].
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Supplying new command line parameters to the executable already active

David Crow24-Jul-08 10:54

David Crow

24-Jul-08 10:54

Not possible since the application is only started once, and thus main() is only called once.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Supplying new command line parameters to the executable already active

led mike24-Jul-08 11:20

led mike

24-Jul-08 11:20

Adarapu Harikrishna wrote:
Is there a way to can send parameters through command line to the executable that is already active.

Yes. You could have the program prompt the user to supply the new file name.

led mike

maybe a solution

tibiz24-Jul-08 11:24

tibiz

24-Jul-08 11:24

may be a solution:

you run the app #1
in MSG processing define an own message, f.e. WM_OWNMSG

run app #2
handle the command line parameters
find/catch the main window of app #1 (f.e. throu FindWindow(...); )
send the cmdline parameters throu SendMessage(FindWindow(...), WM_OWNMSG, (LPARAM)cmdline, (WPARAM)whatWithIt);

tibiZ.net homepage

modified on Thursday, July 24, 2008 7:07 PM

Re: Supplying new command line parameters to the executable already active

KarstenK24-Jul-08 23:31

KarstenK

24-Jul-08 23:31

You got the communicate between your 2 apps. If the have Windows (HWND) you can post messages with approbiate values. Or make a network connection, write something in registry (file) were the other app have to read repeatedly.

Greetings from Germany

how to change the size of a static text by programming

DSPCottage24-Jul-08 9:28

DSPCottage

24-Jul-08 9:28

Dear All
As I write in subject part, I want to change the size of a static box by programming.
But I didnt know how to do that.
Thus please help me.
Regards

Re: how to change the size of a static text by programming

CPallini24-Jul-08 9:46

CPallini

24-Jul-08 9:46

What about SetWindowPos [^]?

Re: how to change the size of a static text by programming

DSPCottage24-Jul-08 9:49

DSPCottage

24-Jul-08 9:49

Thanks alot

How to make a CStatic control to support mouse selection( can be copied)

Junchi Tang24-Jul-08 7:27

Junchi Tang

24-Jul-08 7:27

I have some static text control that I want user to be able to copy the text out. However I could not find an easy way of doing that, can someone shed some light on how this can be done?

Thanks!

Re: How to make a CStatic control to support mouse selection( can be copied)

Mark Salsbery24-Jul-08 7:34

Mark Salsbery

24-Jul-08 7:34

A read-only edit control? That would allow scrollable text as well.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: How to make a CStatic control to support mouse selection( can be copied)

Junchi Tang24-Jul-08 9:45

Junchi Tang

24-Jul-08 9:45

Sure, that is a good way of doing it. But I have a CStatic derived class which can Resize itself to fit the text. If I switch to CEdit I will loose the func.

Any good CEdit with resize functionality.(Not just scrollbar but grow itself if text is too much)

Thanks,

Re: How to make a CStatic control to support mouse selection( can be copied)

CPallini24-Jul-08 9:51

CPallini

24-Jul-08 9:51

Well, probably won't be a daunting task porting such functionality to a CEdit derived class.

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