array of rectangles

• 12-18-2002
xlnk
array of rectangles
I want to create an array of rectangles. How would I got about doing this? Do I create an array of RECT? are there other ways?
• 12-18-2002
Ken Fitlike
Use RECT with win32, CRect or RECT with mfc; other class libraries may have similar structures/classes defined for use. How you set up your array is entirely up to you. Here's 3 possible ways:

RECT rc[100];

const int NUM_RECTS=100;
RECT *rc=new RECT[NUM_RECTS]; /*...and later*/ delete[] rc;

#define NUM_RECTS 100;
RECT *rc=(RECT*)malloc(sizeof(RECT)*NUM_RECTS); /*...and later*/ free(rc);
• 12-18-2002
Sebastiani
There is no other way. :)
• 12-18-2002
Ken Fitlike
>>There is no other way.<<

:D

Future proofing. ;)
• 12-18-2002
MrWizard
Well its the same as any other data type. Do you know how many you need before hand or at run-time?

If you know how many you need then you can do it like this:
Code:

```// An array of 5 rects RECT myRects[5]; int i; // Set a certain rect to something for( i = 0; i < 5; ++i ) {   SetRect( &myRects[i], 10, 20, 30, 40 ); }```
Or if you find out a run-time..
Code:

```// Assume nRects is initialized to number of RECT's we need RECT *pRects = NULL; int i; pRects = new RECT[ nRects ]; if( pRects == NULL ) {   FatalAppExit( 0, "Out of memory" ); } // Setup the rects for( i = 0; i < nRects; ++i ) {   SetRect( (pRects + i), 10, 20, 30, 40 ); } // Free memory delete [] pRects;```
• 12-18-2002
xlnk
Thanks!

Well, i want to build a cellular automata program (Conways game of life) so I'll have a set amount of rectangles before hand.

Thanks again!