C / C++ / MFC

14-Nov-06 4:51

edit your post and place your code into <pre></pre> tags

You don't know where to start ? ask a good friend

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Max++14-Nov-06 5:36

Max++

14-Nov-06 5:36

What is

tags ?

toxcct14-Nov-06 5:41

14-Nov-06 5:41

Max++ wrote:
What is <pre></pre> tags ?

don't you know HTML ?

when posting code, surround it like this :
<pre>
void main(void) {
::printf("Hello world !!!\n");
}
</pre>

which gives you :

void main(void) {
    ::printf("Hello world !!!\n");
}

You don't know where to start ? ask a good friend

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Mark Salsbery14-Nov-06 5:52

Mark Salsbery

14-Nov-06 5:52

toxcct wrote:
don't you know HTML ?

This is a Visual C++ / MFC board. Not all of us know HTML there cowboy.

Smile | :)

toxcct14-Nov-06 5:58

14-Nov-06 5:58

dude, restrict yourself to C/C++, you won't go far in your life then...

You don't know where to start ? ask a good friend

[VisualCalc 3.0][Flags Beginner's Guide]

Hamid_RT14-Nov-06 8:12

Hamid_RT

14-Nov-06 8:12

I think a good way is learning Visuall Studio .Net Smile | :)

WhiteSky

copy image file to memory [modified]

Hamid_RT14-Nov-06 8:09

Hamid_RT

14-Nov-06 8:09

But some titles are depend for example read and write to sql maybe its for sql forum Smile | :)

WhiteSky

_tasleem14-Nov-06 4:47

14-Nov-06 4:47

hi i want to copy bitmap file from disk to memory and then read it bits and after changing some bits then i want to save agian to the file.
i could do that reading bit by bit but that is slow method which i dont want so i want to copy whole image to memory at once.
i m using this code to read/copy image into memory,

HANDLE handle=CreateFile("D:\\tasleem.bmp",GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);<br />
	if (handle == INVALID_HANDLE_VALUE)<br />
    {<br />
	  return 0;<br />
    }<br />
	DWORD fileSize=GetFileSize(handle,NULL);<br />
	DWORD bytesReaded,bytesWritten;<br />
	<br />
	unsigned char *Rbuff=new char[fileSize];<br />
	ReadFile(handle,(LPVOID)Rbuff,fileSize,&bytesReaded,NULL);<br />
        if (bytesReaded==0)<br />
		 return 0;<br />
	CloseHandle(handle);

i looked at bytesreaded variable by debugging its equal to the fileSize variable but when i try to display from memory into console it does not show,any it show garbage.
when i write on another file data from Rbuffer then that is copied and iamge is copy of that hence it all works i think problem is with accessing/display values.

i m trying to show bitmapfile header and info header structure of bitmap only for verification that it works or not.here is the code

cout<<"\n Bitmap File header";<br />
	cout<<"\n"<<Rbuff[i];<br />
	i+=2;<br />
	cout<<"\n"<<Rbuff[i];<br />
	i+=4;<br />
	cout<<"\n"<<Rbuff[i];<br />
	i+=2;<br />
	cout<<"\n"<<Rbuff[i];<br />
	i+=2;<br />
	cout<<"\n"<<Rbuff[i];<br />
	i+=4;<br />
	cout<<"\n"<<Rbuff[i];

-- modified at 11:21 Tuesday 14th November, 2006

Tasleem Arif

David Crow14-Nov-06 4:54

14-Nov-06 4:54

tasleem143 wrote:
DWORD file=GetFileSize(handle,NULL);

Just curious, but do you supopose that someone three weeks from now will be able to discern that file represents the size of a file? Confused | :confused:

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

_tasleem14-Nov-06 5:27

14-Nov-06 5:27

i had changed that it was just the test code a part of program it was not final version code with variable.i just changed that on ur demand

top fileSize Wink | ;)

,which was not my question its still on.

Tasleem Arif

David Crow14-Nov-06 5:35

14-Nov-06 5:35

tasleem143 wrote:
unsigned char *Rbuff=new char[fileSize];

Why are you allocating chars for an unsigned char variable?

tasleem143 wrote:
cout<<"\n Bitmap File header";
cout<<"\n"<<rbuff[i];< blockquote="">

Use endl instead of \n. Otherwise, cout's caching will mess you up.

Is cout producing anything? If it looks like a memory address, you might need to cast it to a char?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

_tasleem14-Nov-06 6:37

14-Nov-06 6:37

tasleem143 wrote:
unsigned char *Rbuff=new char[fileSize];

sorry for this mistake,it was char* then i forget to replaced other side.
yes cout displays but these are fake char like BM p ? ( etc.

Tasleem Arif

David Crow14-Nov-06 6:45

14-Nov-06 6:45

tasleem143 wrote:
fake char like BM p ?

Last time I checked, B, M, p, and ? were all real characters. What exactly are you referring to?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

_tasleem15-Nov-06 2:54

15-Nov-06 2:54

i want to see the exact fields values present in the bitmapfileheader and bitmapfileinfo,when i read bit by bit from hard disk using fread etc then those values are not matched with the current i mean read through memory values i want that both should match so that i m confirmed that these r valid values from memory.

Tasleem Arif

David Crow15-Nov-06 3:18

15-Nov-06 3:18

tasleem143 wrote:
i want to see the exact fields values present in the bitmapfileheader and bitmapfileinfo,when i read bit by bit from hard disk using fread...

So why aren't you doing something like:

CFile               fileBitmap;
BITMAPFILEHEADER    rBitmapFileHeader;
BITMAPINFOHEADER    rBitmapInfoHeader;
fileBitmap.Open(strFilename, CFile::modeRead);
fileBitmap.Read(&rBitmapFileHeader, sizeof(BITMAPFILEHEADER));
fileBitmap.Read(&rBitmapInfoHeader, sizeof(BITMAPINFOHEADER));

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

_tasleem15-Nov-06 20:49

How to save and resotre the Child Frame?

15-Nov-06 20:49

thanks for replay!
i had done that b4 and it works,The purpose of reading from memory n displaying was that i want to confirm that bitmaps is correctaly copied in memory, and purpose of displaying through cout<< was that i m varified that both outputs are same, and if i perform the operations like changing its bits from memory then get the correct bits to change.

what i m doing i had read the file from disk through 2 methods
1.as u mentioned above and it works fine reading byte by byte or structure but this method is slow as i had to read the whole image byte by byte and it will take lot of time.
2.Through second method i m reading the whole image once not like byte by byte as method 1. i.e
file.read(buffer,filesize);
what i m doing is displaying the data using cout and confirming that both workd fine or not.
hope now u understood the situation.

Tasleem Arif

abuseyoudna198114-Nov-06 4:26

abuseyoudna1981

14-Nov-06 4:26

Is anyone kindly to tell me how can i save and resotre the child frames that last opened in a MDI program?
In the Main Frame,left side is a Tree Pane,when we selected a tree item and double click,it will create a corresponding child frame,The Child Frames are created dynamicly. When i close the program ,i need to save the status of the opened frame and open them the next time i start the program.
Is anybody can give me an example?

Re: How to save and resotre the Child Frame?

Hamid_RT15-Nov-06 7:20

Hamid_RT

15-Nov-06 7:20

If I understood you want to save current status of your program you can save parameters to a file or on the registry and when you want to run your program first you read parameters and set your program to it.

WhiteSky

Maximaze dialog?

Larsson14-Nov-06 4:21

Larsson

14-Nov-06 4:21

How can A maximaze a dialog at runtime?

Re: Maximaze dialog?

toxcct14-Nov-06 4:36