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difference from LPRECT and RECT

Started by OoMMMoO Oct 20, 2000 at 5:15 PM 2 replies 2.9k views

Original Post

Oct 20, 2000 at 5:15 PM

Can someone tell me the difference between LPRECT and RECT. Im trying to make a clipper for the edges of the screen and in Lamothes code he uses LPRECT clip_list in his attach clipper function but I dont want to make a function I just want to set up the clipper in my GameInit() function but when I go RECT cliplist; cliplist.left=0; ect.. memcpy(region_data->Buffer,clip_list,sizeof(RECT)); it says it cannot convert clip_list to RECT can someone help me?

djsteffey

165

djsteffey

Oct 20, 2000 at 5:34 PM

    
RECT clipList;
clipList.left = 0;
// etc........

memcpy(region_data->Buffer, &clipList, sizeof(RECT));

notice the ampersand before clipList

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OoMMMoO

Author

OoMMMoO

Oct 20, 2000 at 5:50 PM

When I do that my whole screen turn the color of the last thing I blitted, Do I set the clipper evertime I flip or do I just set it once?

Some of my code is

    
LPDIRECTDRAWCLIPPER		lpddclipper;
LPRGNDATA				region_data;
RECT					clipper_rect;

clipper_rect.bottom=	600;
clipper_rect.top=		0;
clipper_rect.right=		800;
clipper_rect.left=		0;

lpdd->CreateClipper(0,&lpddclipper,NULL);

region_data=(LPRGNDATA)malloc(sizeof(RGNDATAHEADER)+sizeof(RECT));

memcpy(region_data->Buffer,&clipper_rect,sizeof(RECT));

region_data->rdh.dwSize=		sizeof(RGNDATAHEADER);
region_data->rdh.iType=			RDH_RECTANGLES;
region_data->rdh.nCount=		1;
region_data->rdh.nRgnSize=		sizeof(RECT);

region_data->rdh.rcBound.left=	64000;
region_data->rdh.rcBound.top=	64000;
region_data->rdh.rcBound.right=	-64000;
region_data->rdh.rcBound.bottom=-64000;

lpddclipper->SetClipList(region_data,0);
lpddsback->SetClipper(lpddclipper);

free(region_data);

Edited by - OoMMMoO on October 20, 2000 6:58:37 PM

DekuTree64

Oct 21, 2000 at 12:05 AM

Just set it once. Oh, and I think you need to wait until after you release the clipper to free region_data. Not sure though.

-Deku-chan

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