problems with pointers and internal representation.
I am trying to implement the representation in the attached file.
Code:
class matriz {
private:
int fil,col;
int **filaspointer;
int *buffer;
public:
matriz();
matriz(int fil,int col);
};
matriz::matriz(int fil,int col) {
fil=fil;
col=col;
*filaspointer=new int[fil];
for (int i=0; i<fil; i++){
buffer=new int[col];
filaspointer[i]=buffer;
}
}
int main () {
matriz test(2,3);
The program just closes when I execute it (i am 100 % sure its because the pointers are pointing the wrong direction )
But uh...I cannot see the problem here (maybe it lies down within the representation?).
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0 0 0 0.14
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Discussion started by: ezee
1 Replies
LEARN ABOUT SUSE
sdl_createcursor
SDL_CreateCursor(3) SDL API Reference SDL_CreateCursor(3)NAME
SDL_CreateCursor - Creates a new mouse cursor.
SYNOPSIS
#include "SDL.h"
SDL_Cursor *SDL_CreateCursor(Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);
DESCRIPTION
Create a cursor using the specified data and mask (in MSB format). The cursor width must be a multiple of 8 bits.
The cursor is created in black and white according to the following:
Data / Mask Resulting pixel on screen
0 / 1 White
1 / 1 Black
0 / 0 Transparent
1 / 0 Inverted color if possible, black if not.
Cursors created with this function must be freed with SDL_FreeCursor.
EXAMPLE
/* Stolen from the mailing list */
/* Creates a new mouse cursor from an XPM */
/* XPM */
static const char *arrow[] = {
/* width height num_colors chars_per_pixel */
" 32 32 3 1",
/* colors */
"X c #000000",
". c #ffffff",
" c None",
/* pixels */
"X ",
"XX ",
"X.X ",
"X..X ",
"X...X ",
"X....X ",
"X.....X ",
"X......X ",
"X.......X ",
"X........X ",
"X.....XXXXX ",
"X..X..X ",
"X.X X..X ",
"XX X..X ",
"X X..X ",
" X..X ",
" X..X ",
" X..X ",
" XX ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
"0,0"
};
static SDL_Cursor *init_system_cursor(const char *image[])
{
int i, row, col;
Uint8 data[4*32];
Uint8 mask[4*32];
int hot_x, hot_y;
i = -1;
for ( row=0; row<32; ++row ) {
for ( col=0; col<32; ++col ) {
if ( col % 8 ) {
data[i] <<= 1;
mask[i] <<= 1;
} else {
++i;
data[i] = mask[i] = 0;
}
switch (image[4+row][col]) {
case 'X':
data[i] |= 0x01;
k[i] |= 0x01;
break;
case '.':
mask[i] |= 0x01;
break;
case ' ':
break;
}
}
}
sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
}
SEE ALSO
SDL_FreeCursor, SDL_SetCursor, SDL_ShowCursor
SDL Tue 11 Sep 2001, 23:01 SDL_CreateCursor(3)
05-25-2011
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