Re: Strange Font Problem in Edit Control - C / C++ / MFC Discussion Boards

Re: Strange Font Problem in Edit Control

ThatsAlok1-Jun-11 20:09

ThatsAlok

1-Jun-11 20:09

can you check you aprajita font in font folder, what is the maximum size it's support?

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cheers,
Alok Gupta
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Re: Strange Font Problem in Edit Control

ShilpiP1-Jun-11 20:35

ShilpiP

1-Jun-11 20:35

Hi Alok ji,
Please ask this question to Vishal Smile | :)

.

BTW the string is Unicode than there is no need to set the Hindi font. He can set Mangal instead.

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May we find Hundreds of Reasons to Smile Everyday... and
May WE be the Reason for someone else to smile always!" (ICAN)

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Re: Strange Font Problem in Edit Control

ThatsAlok1-Jun-11 20:51

ThatsAlok

1-Jun-11 20:51

SP 24 wrote:
Please ask this question to Vishal .

yeap.... thanks!

SP 24 wrote:
there is no need to set the Hindi font. He can set Mangal instead.

some times it's project requirement to use some particular fonts and never depend on UNICODE based on size and shape they take Smile | :)

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

Re: Strange Font Problem in Edit Control

ShilpiP1-Jun-11 21:29

ShilpiP

1-Jun-11 21:29

ThatsAlok yeap.... thanks!

ThatsAlok some times it's project requirement to use some particular fonts and never depend on UNICODE based on size and shape they take

Yae but for English and Unicode font, I don't think so that it is being used.
For an example if I have English string might be "abcd" and I set some Hindi font. If any shape is mapped in that Hindi font than it might be a hindi value without meaning. So for English font we have to take care of it.
Example :
In some Hindi font "a is mapped with shape क" and in some other font may be "a is mapped with shape अ".

Re: Strange Font Problem in Edit Control

vishalgpt1-Jun-11 21:05

vishalgpt

1-Jun-11 21:05

Aprajita Font maximum size is 72. I had tried Mangal Font also, but no success.

Regards,
Vishal

Re: Strange Font Problem in Edit Control

ShilpiP1-Jun-11 21:30

ShilpiP

1-Jun-11 21:30

Did you check the font in fonts folder ??

Re: Strange Font Problem in Edit Control

vishalgpt1-Jun-11 22:04

vishalgpt

1-Jun-11 22:04

SP 24 wrote:
Did you check the font in fonts folder ??

Yes checked.

Same problem with bengali font. Oriya not checked.

Regards,
Vishal

Re: Strange Font Problem in Edit Control

ShilpiP1-Jun-11 22:46

ShilpiP

1-Jun-11 22:46

vishalgpt wrote:
Yes checked.

It means that your font is in font folder. Right.
Now open Winword and write the path that you want to show in edit control and select all and set the font Mangal and check it is same as displayed in your edit control. If yes than try to check with different size.
Or copy the Mangal font from vista and windows 7 machine. New version of Mangal font looking nice.May be your problem is resolved by installing it in your system.

Re: Strange Font Problem in Edit Control

vishalgpt1-Jun-11 23:33

vishalgpt

1-Jun-11 23:33

SP 24 wrote:
It means that your font is in font folder. Right.

YES.

It is ok with winword. But not with Edit Control. I am on Windows 7.

Regards,
Vishal

Re: Strange Font Problem in Edit Control

ShilpiP2-Jun-11 0:29

ShilpiP

2-Jun-11 0:29

Please share your code where you set the font in Edit control.

Re: Strange Font Problem in Edit Control

Rajesh R Subramanian2-Jun-11 5:45

Rajesh R Subramanian

2-Jun-11 5:45

Can't say a thing without seeing your code.

"Real men drive manual transmission" - Rajesh.

VirualAlloc and ReadFile

csrss1-Jun-11 8:33

csrss

1-Jun-11 8:33

So, got no idea why this is not working but it simply not working.

    SIZE_T BASE_BUFFER_SIZE = 512;

BYTE * bInitialBuffer = NULL;
bInitialBuffer = (BYTE *)VirtualAlloc(0,
        BASE_BUFFER_SIZE, MEM_RESERVE, PAGE_READWRITE);

if(bInitialBuffer == NULL)
{
    // handle this
    TRACE("VirtualAlloc failed!");
    return NULL;
}
DWORD dwReadBytes;
while (FALSE != ReadFile(hDevice, bInitialBuffer, BASE_BUFFER_SIZE,
    (LPDWORD)&dwReadBytes, 0) && dwReadBytes > 0)
{
    TRACE1("got buffer! %d",dwReadBytes );
    }
    if(dwReadBytes <= 0) TRACE("failed!");

GetLAstError() returns Invalid access to memory location.
I am dealing with virtual alloc for a first time :P
What am i doing wrong?
Thanks

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Re: VirualAlloc and ReadFile

Rajesh R Subramanian1-Jun-11 8:52

Rajesh R Subramanian

1-Jun-11 8:52

csrss wrote:
VirtualAlloc(0,
BASE_BUFFER_SIZE, MEM_RESERVE, PAGE_READWRITE);

Just a hunch. The doc says that MEM_RESERVE flag Reserves a range of the process's virtual address space without allocating any actual physical storage in memory or in the paging file on disk.

If you're actually going to do something with the memory, MEM_COMMIT may be a good option (you could combine flags, like MEM_RESERVE | MEM_COMMIT). At least the doc[^] says so.

You also failed to tell what's "not working". I'm assuming that your ReadFile call failed, and GetLastError returns invalid access to memory location. Reading that, I'm assuming that since you're just reserving memory with your VirtualAlloc call, and not committing it before using, you're getting an invalid access error.

"Real men drive manual transmission" - Rajesh.

Re: VirualAlloc and ReadFile

csrss1-Jun-11 9:10

csrss

1-Jun-11 9:10

Yep, you are right. But here with this stuff i got more and more problems. For example, i cannot return bytes from function, (this code is a function, which should read a file into BYTE array and return this array among with nr of bytes read).

BYTE *ReadBytes(HANDLE hDevice, LPDWORD lpdwBytesRead)
{
	SIZE_T BASE_BUFFER_SIZE = 512;

	BYTE * bInitialBuffer = NULL;
	bInitialBuffer = (BYTE *)VirtualAlloc(0, 
			BASE_BUFFER_SIZE, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);

	if(bInitialBuffer == NULL)
	{
		// handle this sh*t
		TRACE("VirtualAlloc failed!");
		return NULL;
	}
	DWORD dwReadBytes;
	while (FALSE != ReadFile(hDevice, bInitialBuffer, BASE_BUFFER_SIZE, 
		(LPDWORD)&dwReadBytes, 0) && dwReadBytes > 0)
	{
		TRACE1("got some buffer! %d", dwReadBytes);
		lpdwBytesRead += dwReadBytes;
	}
	return bInitialBuffer;
}

and if i call it:

DWORD read = 0;
BYTE *DataBuffer = ReadBytes(hFile, &read);

read is always zero, and i got no bytes returned from function... And i cannot use just defined size (skip memory allocation).
Help ;(

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Re: VirualAlloc and ReadFile

Rajesh R Subramanian1-Jun-11 9:20

Rajesh R Subramanian

1-Jun-11 9:20

One step at a time. Have you progressed from your previous error, or not? With the MEM_RESERVE flag, do you still get an invalid access error while calling ReadFile?

"Real men drive manual transmission" - Rajesh.

Re: VirualAlloc and ReadFile

csrss1-Jun-11 9:50

csrss

1-Jun-11 9:50

At this moment:

while (FALSE != ReadFile(hDevice, bInitialBuffer, BASE_BUFFER_SIZE, 
		(LPDWORD)&dwReadBytes, 0) && dwReadBytes > 0)
	{
		TRACE1("got some buffer! %d", dwReadBytes);

dwReadBytes contains right value, which is 106 bytes, that is exactly the size of my file (just a text file). Here :

lpdwBytesRead += dwReadBytes;

It tries to append them, but lpdwBytesRead contain some trash, even if it has been initialized outside the function to zero:

DWORD read = 0;
BYTE *DataBuffer = ReadBytes(hFile, &read);

When function returns, read is zero and there is no buffer returned Frown | :(

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0110010101110011

Re: VirualAlloc and ReadFile

Rajesh R Subramanian1-Jun-11 10:18

Rajesh R Subramanian

1-Jun-11 10:18

This piece of code works (you had trouble bringing the buffer to the calling function, which is resolved here)

#define BASE_BUFFER_SIZE 512

BOOL ReadBytes(HANDLE hFile, PBYTE bInitialBuffer)
{
	DWORD dwReadBytes;
	while (FALSE != ReadFile(hFile, bInitialBuffer, BASE_BUFFER_SIZE, 
		(LPDWORD)&dwReadBytes, 0) && dwReadBytes > 0)
	{
		/*CString str;
		str.Format(L"got buffer! %d",dwReadBytes);
		AfxMessageBox(str);*/
     }
     if(dwReadBytes <= 0) 
	 { 
		 return FALSE;
	 }
	 return TRUE;
}

void CMTest1Dlg::OnBnClickedOk()
{
	HANDLE hFile = NULL;

	hFile = CreateFile(L"C:\\temp\\myfile.txt", GENERIC_READ, 0, 0, OPEN_EXISTING, 0, 0);
	if(INVALID_HANDLE_VALUE == hFile){
		AfxMessageBox(L"CreateFile failed");
		return;
	}

	BYTE *buffer = NULL;
	buffer = (BYTE *)VirtualAlloc(0, BASE_BUFFER_SIZE, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
 
	if(NULL == buffer)
	{
		AfxMessageBox(L"VirtualAlloc failed!");
		return;
	}
	BOOL bRead = ReadBytes(hFile, buffer);
	//use buffer here
}

"Real men drive manual transmission" - Rajesh.

Re: VirualAlloc and ReadFile

Rajesh R Subramanian1-Jun-11 9:24

Rajesh R Subramanian

1-Jun-11 9:24

csrss wrote:
i cannot return bytes from function, (this code is a function, which should read a file into BYTE array and return this array among with nr of bytes read).

This has nothing to do with VirtualAlloc.

"Real men drive manual transmission" - Rajesh.

Re: VirualAlloc and ReadFile

csrss1-Jun-11 10:01

csrss

1-Jun-11 10:01

I know it is not perfect :P (the code)
I have never worked with unsigned type allocation before. (the only proper way for returning unsigned type from function i know is to declare buffer size and make this, BYTE, static)
If i pass a pointer to BYTE to this function from calling function, it still returns empty BYTE buffer.
I am out of ideas.
Somebody, help? :P

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Re: VirualAlloc and ReadFile

csrss1-Jun-11 10:08

csrss

1-Jun-11 10:08

I got it!!! YEah!

*lpdwBytesRead += dwReadBytes;

Its just too much on my head, too much...

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Re: VirualAlloc and ReadFile

Rajesh R Subramanian1-Jun-11 10:19

Rajesh R Subramanian

1-Jun-11 10:19

Everything's good now? Smile | :)

The piece of code I've given above in my other reply doesn't involve any pointer arithmetic.

"Real men drive manual transmission" - Rajesh.

Re: VirualAlloc and ReadFile

csrss1-Jun-11 11:11

csrss

1-Jun-11 11:11

For now i have solved the issue with simple text file and one time allocation Smile | :)

Now, it is time to read mp4 file into buffer and make a copy of it :X

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Re: VirualAlloc and ReadFile

David Crow1-Jun-11 10:10

David Crow

1-Jun-11 10:10

csrss wrote:
lpdwBytesRead += dwReadBytes;

This looks suspect. You are incrementing the pointer instead of what the pointer points to. Is that your intent?

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Re: VirualAlloc and ReadFile

csrss1-Jun-11 11:12

csrss

1-Jun-11 11:12

It was very suspicious in fact! Yes, i have made a disaster mistake and it is corrected by now Smile | :)

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va_list not working form me and i dont know why

kosacid1-Jun-11 5:19

kosacid

1-Jun-11 5:19

void Print(const char* s_Format, ...)
{
	va_list  args;
	va_start(args, s_Format);
	char s_Out[1024];
	sprintf(s_Out,s_Format, args);
	Output += s_Out;
	FILE *f = fopen("connection.log", "at");
	fprintf(f, Output.c_str());
	fclose(f);
	return;
}

the s_Format is fine but the arguments are not working the string Output; is stored in the header
when i send Print("Sending File: %s\n",fpath); all i get is Sending File: ú· when it should be Sending File: test.ini
even when i do say Print("hello","hello"); i get hello then garbage

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