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46 lines
1.0 KiB
HTML
46 lines
1.0 KiB
HTML
<h1>标准库函数 - block</h1>
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<p>原型：extern void block(int left, int top, int right, int bottom, int mode);</p>
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<p>用法：#include <system.h></p>
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<p>功能：在屏幕上画一矩形并填充。</p>
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<p>说明：（left,top）指定左上角坐标，（right,bottom）指定右下角坐标。<br>
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mode决定画图方式，其值含义如下：<br>
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0：清除方式<br>
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1：正常方式<br>
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2：反相方式<br>
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</p>
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举例：<pre><code class="language-c">
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// block.c
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#include <system.h>
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main()
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{
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int c;
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clrscr();
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gotoxy(10,10); // Hide cursor(moved out of screen)
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block(1,0,111,47,1);
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getchar();
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block(20,10,100,30,0);
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getchar();
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block(40,0,80,47,2);
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getchar();
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getchar();
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return 0;
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}
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</code></pre>相关函数：<a href="rectangle.html">rectangle</a>
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