| 词条 | cleardevice |
| 释义 | § 函数名 cleardevice § 功能 清除图形屏幕 § 语法 void far cleardevice(void); § 程序演示 #include #include #include #include int main(void) { /* request auto detection */ int gdriver = DETECT, gmode, errorcode; int midx, midy; /* initialize graphics and local variables */ initgraph(&gdriver, &gmode, ""); /* read result of initialization */ errorcode = graphresult(); if (errorcode != grOk) /* an error occurred */ { printf("Graphics error: %s\", grapherrormsg(errorcode)); printf("Press any key to halt:"); getch(); exit(1); /* terminate with an error code */ } midx = getmaxx() / 2; midy = getmaxy() / 2; setcolor(getmaxcolor()); /* for centering screen messages */ settextjustify(CENTER_TEXT, CENTER_TEXT); /* output a message to the screen */ outtextxy(midx, midy, "press any key to clear the screen:"); /* wait for a key */ getch(); /* clear the screen */ cleardevice(); /* output another message */ outtextxy(midx, midy, "press any key to quit:"); /* clean up */ getch(); closegraph(); return 0; } |
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