Convert from TCHAR* to char* - C / C++ / MFC Discussion Boards

RaymondM12-Jun-08 0:02

12-Jun-08 0:02

That is what I did, and was able to compile some of the various crypto programmes, but each one has a different cryptolib.h, and none of them seem to be right for the aestest programmes.
Raymond

Re: Time limited Demo

Graham Shanks12-Jun-08 0:13

Graham Shanks

12-Jun-08 0:13

OK, and I see that you have also got previous version of the Crypto++ library as well. It may be that the example is using an earlier version of Crypto++ (the Sourceforge download pahe[^] has earlier versions.

Other than posting a question to the author on the project page (or asking him if he has an update) I'm afraid that I cannot think what else to suggest. You may just have to try to update the aestest program to the latest version of Crypto++ yourself

Graham

Librarians rule, Ook!

Re: Time limited Demo

Graham Shanks12-Jun-08 0:18

Graham Shanks

12-Jun-08 0:18

P.S. This page[^] may help. Jeffrey Walton is active on CP so hopefully he would reply to your question

Graham

Librarians rule, Ook!

Re: Time limited Demo

RaymondM12-Jun-08 1:08

RaymondM

12-Jun-08 1:08

Thanks, but I have already gone through that page on the way to Crypto.
Raymond

Is there any API to change the owner of a certain window at runtime?

Joseph Marzbani10-Jun-08 8:30

Joseph Marzbani

10-Jun-08 8:30

HI Masters!

I'm writing a program that shows a short video clip to user in a seperate window than the main one. but they make TWO button on taskbar, while I don't like so. I'm using pure Win32 API ...

Thnx!

Re: Is there any API to change the owner of a certain window at runtime?

«_Superman_»10-Jun-08 13:07

«_Superman_»

10-Jun-08 13:07

How about creating the second window as a child of the first one by specifying the WS_CHILD style!!!

« Superman »

Re: Is there any API to change the owner of a certain window at runtime?

Naveen10-Jun-08 14:32

Naveen

10-Jun-08 14:32

From MSDN:

Managing Taskbar Buttons
The Shell creates a button on the taskbar whenever an application creates a window that isn't owned. To ensure that the window button is placed on the taskbar, create an unowned window with the WS_EX_APPWINDOW extended style. To prevent the window button from being placed on the taskbar, create the unowned window with the WS_EX_TOOLWINDOW extended style. As an alternative, you can create a hidden window and make this hidden window the owner of your visible window

nave

[OpenedFileFinder]

Convert from TCHAR* to char*

x87Bliss10-Jun-08 8:21

x87Bliss

10-Jun-08 8:21

I am writing an application that communicates with an external device. I need to copy a CString (TCHAR*) to a multibyte string buffer (char*) - the catch is I need the code to be able to compile with UNICODE on or off. Basically I need a function that can copy either a WCHAR* or char* to a char*.

Currently I have:

CString szVal = _T("Some User Input String"); // i.e. not always the same value
char* Buf;
size_t BufLen;
#ifdef UNICODE
wcstombs_s(&szBufLen, NULL, NULL, szVal, _TRUNCATE); // get the req'd length including NULL
szBuf = new char[szBufLen];
wcstombs_s(&szBufLen, szBuf, szBufLen, szVal, _TRUNCATE); // convert and copy
#else
szBuf = new char[szVal.GetLength() + 1];
strcpy(szBuf, szVal);
#endif
// more code
delete [] szBuf;

The above works, but I would prefer not having to use the preprocessor directives if posssible.
The function _tcscpy will not convert from WCHAR to char when needed. I know I can easily write my own overloaded function, but I was hoping there was already a function defined.

Re: Convert from TCHAR* to char*

led mike10-Jun-08 8:34

led mike

10-Jun-08 8:34

x87Bliss wrote:
but I was hoping there was already a function defined.

Well while you were hoping, I was searching.[^] Roll eyes | :rolleyes:

led mike

Re: Convert from TCHAR* to char*

x87Bliss10-Jun-08 11:50

x87Bliss

10-Jun-08 11:50

Thanks. Sorry, I apparently am not good at searching; I could only find the functions for WCHAR and char, not TCHAR. Those macros are perfect.

Re: Convert from TCHAR* to char*

Jijo.Raj10-Jun-08 9:11

Jijo.Raj

10-Jun-08 9:11

What about T2A() macro?
Refer it here - http://msdn.microsoft.com/en-us/library/87zae4a3(VS.80).aspx[^]

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Set a "Title" and "Icon" for a certain window in taskbar ! [modified]

Joseph Marzbani10-Jun-08 8:17

Joseph Marzbani

10-Jun-08 8:17

Hi Masters!

I've got to use a dialog box WITHOUT titlebar as the main window in my app. Also the application has NOT any icon into it (don't ask me WHY!).

Now when it runs, its button on the taskbar has no text as a title and no icon on it (It's realy ugly now!).

Can any one help me PLS? ...

modified on Tuesday, June 10, 2008 2:24 PM

Re: Set a "Title" and "Icon" for a certain window in taskbar !

Jagdish V. Bhimbha10-Jun-08 22:49

Jagdish V. Bhimbha

10-Jun-08 22:49

Hi...

Rather than using WITHOUT titlebar, just try to set BorderStyle = NULL.

It will show icon & title in taskbar...

Good Luck... Rose | [Rose]

Jagdish Bhimbha
S/W Engineer

Hook ?

york52810-Jun-08 6:00

york528

10-Jun-08 6:00

How can I hook the message when file create or delete??

Re: Hook ?

Joe Woodbury10-Jun-08 6:11

Joe Woodbury

10-Jun-08 6:11

Do you mean: FindFirstChangeNotification, FindNextChangeNotification, FindCloseChangeNotification?

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: Hook ?

york52810-Jun-08 6:50

york528

10-Jun-08 6:50

almost like that

but it's no real-time,right?

I wanna program a dll

it's a real time Hook to watch if there is file 'create' or 'delete'

if there is...then I'll do...

Re: Hook ?

Joe Woodbury10-Jun-08 8:15

Joe Woodbury

10-Jun-08 8:15

It's as real time as anything above the driver level. ReadDirectoryChangesW() provides similar functionality, but unless used with overlapped IO, it's a blocking call that can't be easily interrupted.

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: Hook ?

Jijo.Raj10-Jun-08 6:45

Jijo.Raj

10-Jun-08 6:45

Have a look at ReadDirectoryChangesW().

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Hook ?

york52810-Jun-08 7:16

york528

10-Jun-08 7:16

I got a demo about ReadDirectoryChangesW() that's what I want!~~

thank you

and

thanks all

Re: Hook ?

Hamid_RT10-Jun-08 19:39

Hamid_RT

10-Jun-08 19:39

And see Spying a file system[^].

Re: Hook ?

york52810-Jun-08 23:49

york528

10-Jun-08 23:49

this demo is easy but with great helpful

thanks

Re: Hook ?

Hamid_RT11-Jun-08 1:15

Hamid_RT

11-Jun-08 1:15

I gald it was helpful for you. Big Grin | :-D

Re: Hook ?

york52811-Jun-08 4:22

york528

11-Jun-08 4:22

i still have a question

i wanna rewrite a Dialog project and try to use those funtions

when i use CCriticalSection and i include the <afxmt.h>

some functions and variables can't be seen in a Thread function

it shows that

error C2065: 'USES_CONVERSION' : undeclared identifier
error C2065: 'ReadDirectoryChangesW' : undeclared identifier
error C2065: 'm_list' : undeclared identifier
error C2227: left of '->InsertItem' must point to class/struct/union
error C2227: left of '->GetItemCount' must point to class/struct/union
error C2227: left of '->SetItemText' must point to class/struct/union

How can i deal with it ??

And why ??

Re: Hook ?

Hamid_RT11-Jun-08 5:44

Hamid_RT

11-Jun-08 5:44

Did you include Header files WinBase.h Windows.h ?

Re: Hook ?

york52811-Jun-08 6:51

york528

11-Jun-08 6:51

no

but i tried include windows.h and winbase.h

still have two error

error C2065: 'USES_CONVERSION' : undeclared identifier
error C2065: 'ReadDirectoryChangesW' : undeclared identifier

should i include other head file or something??

thank you

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