c语言在vc环境下，如何实现键盘上下下左右键的触控

[mengzhouzhou]

通过按键盘上的，上下左右键 来触发事件调用。 简单给提示需要什么 头文件， 比如，按一下﹤―这个键，就输出printf（“。。。”）； 求一个实例。

[野狼孤]

其实方向键 按一下 会产生3个对应的编码 所以需要做3次选择 这里给你一段代码 都是我一直用的
//从键盘读数据，并分析其功能
int mykeyboard::read_key_assay (void)
{
//定义输入字符的保存变量
int ch = my_getch();
#if 1
//取出个功能键
if (27 == ch)
{
ch = my_getch ();

//其他的功能键
if (91 == ch)
{
ch = my_getch ();

//方向键上下页等功能键
switch (ch)
{
//方向键
case 65:
//cout << "当前的是向上键" << endl;
return MY_UP;
break;
case 66:
//cout << "当前的是向下键" << endl;
return MY_DOWN;
break;
case 67:
//cout << "当前的是向右键" << endl;
return MY_RIGHT;
break;
case 68:
//cout << "当前的是向左键" << endl;
return MY_LEFT;
break;
}
}

//统一出口
goto _out;
}
//取出字母键
if ((31 < ch) && (127 > ch))
{
// cout << "你当前按下的是字符键： " << (char)ch << endl;
return MY_INSERT;
}

#endif

_out:
return 0;
}

[mengzhouzhou]

谢谢楼上的，非常感谢。很牛。

[mengzhouzhou]

在vc下用C语言如何实现菜单 在方向键上下的控制下，实现按下向下键就显示就是菜单中选项向下移一位并高亮显示出来？？很困惑。我是新手。不知道该用到什么函数，什么头文件。求解释代码示例。。

[赵4老师]

仅供参考

#include <windows.h>
#include <stdio.h>

void ConPrint(char *CharBuffer, int len);
void ConPrintAt(int x, int y, char *CharBuffer, int len);
void gotoXY(int x, int y);
void ClearConsole(void);
void ClearConsoleToColors(int ForgC, int BackC);
void SetColorAndBackground(int ForgC, int BackC);
void SetColor(int ForgC);
void HideTheCursor(void);
void ShowTheCursor(void);

int main(int argc, char* argv[])
{
   HideTheCursor();
   ClearConsoleToColors(15, 1);
   ClearConsole();
   gotoXY(1, 1);
   SetColor(14);
   printf("This is a test...\n");
   Sleep(5000);
   ShowTheCursor();
   SetColorAndBackground(15, 12);
   ConPrint("This is also a test...\n", 23);
   SetColorAndBackground(1, 7);
   ConPrintAt(22, 15, "This is also a test...\n", 23);
   gotoXY(0, 24);
   SetColorAndBackground(7, 1);
   return 0;
}

//This will clear the console while setting the forground and
//background colors.
void ClearConsoleToColors(int ForgC, int BackC)
{
   WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F);
   //Get the handle to the current output buffer...
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
   //This is used to reset the carat/cursor to the top left.
   COORD coord = {0, 0};
   //A return value... indicating how many chars were written
   //not used but we need to capture this since it will be
   //written anyway (passing NULL causes an access violation).
   DWORD count;

   //This is a structure containing all of the console info
   // it is used here to find the size of the console.
   CONSOLE_SCREEN_BUFFER_INFO csbi;
   //Here we will set the current color
   SetConsoleTextAttribute(hStdOut, wColor);
   if(GetConsoleScreenBufferInfo(hStdOut, &csbi))
   {
      //This fills the buffer with a given character (in this case 32=space).
      FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);

      FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);
      //This will set our cursor position for the next print statement.
      SetConsoleCursorPosition(hStdOut, coord);
   }
}

//This will clear the console.
void ClearConsole()
{
   //Get the handle to the current output buffer...
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
   //This is used to reset the carat/cursor to the top left.
   COORD coord = {0, 0};
   //A return value... indicating how many chars were written
   //   not used but we need to capture this since it will be
   //   written anyway (passing NULL causes an access violation).
   DWORD count;
   //This is a structure containing all of the console info
   // it is used here to find the size of the console.
   CONSOLE_SCREEN_BUFFER_INFO csbi;
   //Here we will set the current color
   if(GetConsoleScreenBufferInfo(hStdOut, &csbi))
   {
      //This fills the buffer with a given character (in this case 32=space).
      FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);
      FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count);
      //This will set our cursor position for the next print statement.
      SetConsoleCursorPosition(hStdOut, coord);
   }
}

//This will set the position of the cursor
void gotoXY(int x, int y)
{
   //Initialize the coordinates
   COORD coord = {x, y};
   //Set the position
   SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}

//This will set the forground color for printing in a console window.
void SetColor(int ForgC)
{
   WORD wColor;
   //We will need this handle to get the current background attribute
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
   CONSOLE_SCREEN_BUFFER_INFO csbi;

   //We use csbi for the wAttributes word.
   if(GetConsoleScreenBufferInfo(hStdOut, &csbi))
   {
      //Mask out all but the background attribute, and add in the forgournd color
      wColor = (csbi.wAttributes & 0xF0) + (ForgC & 0x0F);
      SetConsoleTextAttribute(hStdOut, wColor);
   }
}

//This will set the forground and background color for printing in a console window.
void SetColorAndBackground(int ForgC, int BackC)
{
   WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F);;
   SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), wColor);
}

//Direct console output
void ConPrint(char *CharBuffer, int len)
{
   DWORD count;
   WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), CharBuffer, len, &count, NULL);
}

//Direct Console output at a particular coordinate.
void ConPrintAt(int x, int y, char *CharBuffer, int len)
{
   DWORD count;
   COORD coord = {x, y};
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
   SetConsoleCursorPosition(hStdOut, coord);
   WriteConsole(hStdOut, CharBuffer, len, &count, NULL);
}

//Hides the console cursor
void HideTheCursor()
{
   CONSOLE_CURSOR_INFO cciCursor;
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

   if(GetConsoleCursorInfo(hStdOut, &cciCursor))
   {
      cciCursor.bVisible = FALSE;
      SetConsoleCursorInfo(hStdOut, &cciCursor);
   }
}

//Shows the console cursor
void ShowTheCursor()
{
   CONSOLE_CURSOR_INFO cciCursor;
   HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

   if(GetConsoleCursorInfo(hStdOut, &cciCursor))
   {
      cciCursor.bVisible = TRUE;
      SetConsoleCursorInfo(hStdOut, &cciCursor);
   }
}

[夏天__]

[mengzhouzhou]

只用C语言实现，该怎么办。实现方向键控制，还有高亮显示。还是在VC编译环境下？？？求啊！！！

[mengzhouzhou]

int mykeyboard::read_key_assay (void) 是c言语中的吗？
就是用C语言在vc环境下实现键盘的方向控制还有高亮显示行？？

[赵4老师]

//The _getch function reads a single character from the console without echoing.
//Function can not be used to read CTRL+Break.
//When reading a function key or an arrow key,
//_getch must be called twice; the first call returns 0 or 0xE0,
//and the second call returns the actual key code.
#include <conio.h>
#include <windows.h>
void main() {
    unsigned short k;

    while (1) {
        Sleep(100);
        k=getch();
        if (27==k) break;//按Esc键退出
        if (0==k||0xe0==k) k|=getch()<<8;//非字符键
        cprintf("%04x pressed.\r\n",k);
    }
}

[jokers_i]

为什么微软把控制台输出API做的这么复杂呢？
[Quote=引用 8 楼 的回复:]

仅供参考C/C++ code
#include <windows.h>
#include <stdio.h>

void ConPrint(char *CharBuffer, int len);
void ConPrintAt(int x, int y, char *CharBuffer, int len);
void gotoXY(int x, int y);
void ClearConso……
[/Quote]

[赵4老师]

[Quote=引用 10 楼 的回复:]
为什么微软把控制台输出API做的这么复杂呢？

引用 8 楼 的回复:

仅供参考C/C++ code
#include <windows.h>
#include <stdio.h>

void ConPrint(char *CharBuffer, int len);
void ConPrintAt(int x, int y, char *CharBuffer, int len)……
[/Quote]
参考
console屏幕处理例子程序。终端窗口屏幕处理相关API使用例子。来自MSVC20\SAMPLES\win32\console\
http://download.csdn.net/detail/zhao4zhong1/3461309

[赵4老师]

Windows的Console比其它操作系统的Console功能多很多，所以使用也复杂很多。

[mengzhouzhou]

非常感谢，谢谢