C語言 cleardevice()用法及代碼示例

頭文件graphics.h包含cleardevice()函數，該函數在圖形模式下清除屏幕並將當前位置設置為(0,0)。清除屏幕包括用當前背景色填充屏幕。

用法:

void cleardevice();

以下是cleardevice()在C中的實現：

// C Implementation for cleardevice() 
#include <graphics.h> 
  
// driver code 
int main() 
{ 
    // gm is Graphics mode which is 
    // a computer display mode that 
    // generates image using pixels. 
    // DETECT is a macro defined in 
    // "graphics.h" header file 
    int gd = DETECT, gm; 
  
    // initgraph initializes the 
    // graphics system by loading a 
    // graphics driver from disk 
    initgraph(&gd, &gm, ""); 
  
    // set the background colour as GREEN 
    setbkcolor(GREEN); 
  
    // outtext function displays 
    // text at current position. 
    outtext("Press any key to clear the screen."); 
  
    getch(); 
  
    // cleardevice function 
    cleardevice(); 
  
    outtext("Press any key to exit..."); 
  
    getch(); 
  
    // closegraph function closes the 
    // graphics mode and deallocates 
    // all memory allocated by 
    // graphics system . 
    closegraph(); 
  
    return 0; 
}

輸出：

On executing the program, the output window looks like:

On pressing any key:

To exit, press any key.

相關用法

注：本文由純淨天空篩選整理自Sahil_Bansall大神的英文原創作品 cleardevice() function in C。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。