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c:graphics.h:rectangle [2015/05/06 23:06] |
c:graphics.h:rectangle [2024/02/16 01:05] (current) |
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+ | ===== rectangle ===== | ||
+ | |||
+ | |||
+ | ====Syntax of rectangle ==== | ||
+ | <code c> | ||
+ | #include <graphics.h> | ||
+ | void rectangle(int left, int top, int right, int bottom); | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Description of rectangle ==== | ||
+ | <code c> | ||
+ | rectangle draws a rectangle in the current line style, thickness, and | ||
+ | drawing color. | ||
+ | (left,top) is the upper left corner of the rectangle, and (right,bottom) | ||
+ | is its lower right corner. | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== Example of rectangle ==== | ||
+ | <code c> | ||
+ | /* rectangle example */ | ||
+ | |||
+ | #include <graphics.h> | ||
+ | #include <stdlib.h> | ||
+ | #include <stdio.h> | ||
+ | #include <conio.h> | ||
+ | |||
+ | int main(void) | ||
+ | { | ||
+ | /* request autodetection */ | ||
+ | int gdriver = DETECT, gmode, errorcode; | ||
+ | int left, top, right, bottom; | ||
+ | |||
+ | /* initialize graphics and local variables */ | ||
+ | initgraph(&gdriver, &gmode, ""); | ||
+ | |||
+ | /* read result of initialization */ | ||
+ | errorcode = graphresult(); | ||
+ | if (errorcode != grOk) { /* an error occurred */ | ||
+ | printf("Graphics error: %s\n", grapherrormsg(errorcode)); | ||
+ | |||
+ | printf("Press any key to halt:"); | ||
+ | getch(); | ||
+ | exit(1); /* terminate with an error code */ | ||
+ | } | ||
+ | |||
+ | left = getmaxx() / 2 - 50; | ||
+ | top = getmaxy() / 2 - 50; | ||
+ | right = getmaxx() / 2 + 50; | ||
+ | bottom = getmaxy() / 2 + 50; | ||
+ | |||
+ | /* draw a rectangle */ | ||
+ | rectangle(left,top,right,bottom); | ||
+ | |||
+ | /* clean up */ | ||
+ | getch(); | ||
+ | closegraph(); | ||
+ | return 0; | ||
+ | } | ||
+ | </code> | ||
+ | |||
+ | |||
+ | ==== See also ==== | ||
+ | [[bar]] | ||
+ | [[bar3d]] | ||
+ | [[setcolor]] | ||
+ | [[setlinestyle]] | ||
+ | |||
+ | |||
+ | ===== output of rectangle example ===== | ||
+ | |||
+ | no output of example at the moment | ||
+ | do not hesitate and add it... | ||
+ | |||
+ | |||