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2023年8月22日,周二下午
昨天花了一个下午和晚上来制作的,
实现了一些基本的功能,
但由于代码只有130行,所以存在很多不足之处
GitHub:GitHub - JuLongZhiLu/JuLongEditor: C/C++小项目,使用Windows控制台API来制作一个简单的文本编辑器,只有130行代码
#include <windows.h>
#include <conio.h>
using namespace std;//设置编辑器的能容纳的文本大小,最多10行80列
const int MAX_ROWS = 10;
const int MAX_COLS = 80;CHAR_INFO buffer[MAX_ROWS][MAX_COLS];//二维字符数组,用来构成文本
COORD cursorPos;//专门坐标位置的数据结构
CONSOLE_SCREEN_BUFFER_INFO csbi;//控制台屏幕缓冲区信息//初始化二维字符数组
void initBuffer() {for (int i = 0; i < MAX_ROWS; i++) {for (int j = 0; j < MAX_COLS; j++) {buffer[i][j].Char.AsciiChar = ' ';buffer[i][j].Attributes = FOREGROUND_BLUE;}}
}//初始化坐标数据结构
void initCursor() {cursorPos.X = 0;cursorPos.Y = 0;
}//把构成文本的二维数组打印到控制台
void drawBuffer(HANDLE console) {SMALL_RECT rect;rect.Top = 0;rect.Left = 0;rect.Bottom = MAX_ROWS - 1;rect.Right = MAX_COLS - 1;WriteConsoleOutputA(console, (CHAR_INFO*)buffer, { MAX_COLS, MAX_ROWS }, { 0, 0 }, &rect);
}//处理键盘按键
void ProcessKeys(int key, HANDLE console) {if (key == 0 || key == 224) { //如果是方向键和删除键key = _getch();switch (key) {case 72: // 上if (cursorPos.Y != 0)cursorPos.Y--;SetConsoleCursorPosition(console, cursorPos);//移动光标到指定位置break;case 80: // 下cursorPos.Y++;SetConsoleCursorPosition(console, cursorPos);//移动光标到指定位置break;case 75: // 左if (cursorPos.X != 0)cursorPos.X--;if (cursorPos.Y != 0 && cursorPos.X == 0)cursorPos.Y--;SetConsoleCursorPosition(console, cursorPos);break;case 77: // 右if (cursorPos.X != MAX_COLS)//如果一行的字符数没超过最大列数,那么光标就右移一位cursorPos.X++;else{cursorPos.X = 0;//如果超过了,就换行cursorPos.Y++;}SetConsoleCursorPosition(console, cursorPos);break;case 83: //删除键buffer[cursorPos.Y][cursorPos.X - 1].Char.AsciiChar = ' ';buffer[cursorPos.Y][cursorPos.X - 1].Attributes = FOREGROUND_BLUE;if (cursorPos.X != 0)cursorPos.X--;if (cursorPos.Y != 0 && cursorPos.X == 0)cursorPos.Y--;SetConsoleCursorPosition(console, cursorPos);drawBuffer(console);break;}}else if (key == 13) {//如果是换行键cursorPos.X = 0;cursorPos.Y++;SetConsoleCursorPosition(console, cursorPos); //在输出设备上定位光标}else if (key == 8) { // 如果是回退键(Backspace键)buffer[cursorPos.Y][cursorPos.X - 1].Char.AsciiChar = ' ';buffer[cursorPos.Y][cursorPos.X - 1].Attributes = FOREGROUND_BLUE;if (cursorPos.X != 0)cursorPos.X--;if (cursorPos.Y != 0 && cursorPos.X == 0)cursorPos.Y--;SetConsoleCursorPosition(console, cursorPos);drawBuffer(console);}else {//如果是输入文本buffer[cursorPos.Y][cursorPos.X].Char.AsciiChar = (char)key;buffer[cursorPos.Y][cursorPos.X].Attributes = FOREGROUND_BLUE;drawBuffer(console);cursorPos.X++;SetConsoleCursorPosition(console, cursorPos);drawBuffer(console);}
}void input(HANDLE console) {while (true){GetConsoleScreenBufferInfo(console, &csbi); //获取屏幕缓冲的光标位置,然后把当前光标位置赋给COORDcursorPos.X = csbi.dwCursorPosition.X; //得到坐标x的值cursorPos.Y = csbi.dwCursorPosition.Y; //y值if (_kbhit()) {int key = _getch();ProcessKeys(key, console);}}
}int main() {initBuffer();initCursor();HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);input(console);
}