W32 Console Library

[Shootfast]

I'm dynamically creating a 2 dimensional array of CHAR_INFO structs using the following code:
[cpp]
CHAR_INFO **m_chiBuffer;

..

m_chiBuffer = new CHAR_INFO *[iY];

for(int i = 0; i < iY; i++)
m_chiBuffer[i] = new CHAR_INFO[iX];[/cpp]

and writing it to the screen using WriteConsoleOutput. However, using this method causes a buffer of black characters to become:

[img]http://i44.tinypic.com/105sc3b.png[/img]

Copying the contents of the buffer to an array of constant width and height (CHAR_INFO chiBuffer[iY][iX]) as per the following code, works:
[cpp]
CHAR_INFO chiBuffer[25][80];
for(int y = 0; y < 25; y++)
{
for(int x = 0; x < 80; x++)
chiBuffer[y][x] = m_chiBuffer[y][x];
}

fSuccess = WriteConsoleOutput(
m_hStdout, // screen buffer to write to
&chiBuffer[0][0], // buffer to copy from --> (&m_chiBuffer[0][0] doesn't work) <--
coordBufSize, // col-row size of chiBuffer
coordBufCoord, // top left src cell in chiBuffer
&srctReadRect); // dest. screen buffer rectangle[/cpp]
Any ideas why?

[jA_cOp]

CHAR_INFO chiBuffer[iY][iX] is one continuous block of memory which is what WriteConsoleOutput expects. new CHAR_INFO *[iY] is simply an array of pointers; the actual data you wanted to portray is stored elsewhere (indicated by the pointer address).

You can dynamically allocate the equivalent of CHAR_INFO chiBuffer[iY][iX] doing:
[cpp]
CHAR_INFO* chiBuffer = new CHAR_INFO[iY * iX];
[/cpp]

[Shootfast]

Then I end up with this funky pattern instead:

[img]http://i42.tinypic.com/2lbkuwm.png[/img]

Using:
[cpp]chiBuffer = new CHAR_INFO [iY * iX];

CHAR_INFO BLK;
BLK.Char.UnicodeChar = ' ';
BLK.Attributes = 0;

for(int y = 0; y < iY; y++)
{
for(int x = 0; x < iX; x++)
chiBuffer[y * x] = BLK;
}

fSuccess = WriteConsoleOutput(
m_hStdout, // screen buffer to write to
chiBuffer, // buffer to copy from
coordBufSize, // col-row size of chiBuffer
coordBufCoord, // top left src cell in chiBuffer
&srctReadRect); // dest. screen buffer rectangle
[/cpp]

[ZeekyHBomb]

Try chiBuffer[iY * y + x] = BLK;

[Shootfast]

Changed it to:

[cpp]for(int i = 0; i < iY * iX; i++)
chiBuffer[i] = BLK;[/cpp]

and it's working, thanks!

[jA_cOp]

[QUOTE=Shootfast;20663517]Changed it to:

[cpp]for(int i = 0; i < iY * iX; i++)
chiBuffer[i] = BLK;[/cpp]

and it's working, thanks![/QUOTE]

If that's all you're going to do in that loop, you should just use memcpy.

[gparent]

[QUOTE=jA_cOp;20663755]If that's all you're going to do in that loop, you should just use memcpy.[/QUOTE]

memset, no?