【发布时间】:2014-10-29 19:24:18
【问题描述】:
在 C 中,我如何编写一个程序来告诉我按下了哪些键?例如,它应该输出
You pressed F1 key
You pressed ESC key
You released F1 key
如果同时按下 F1 和 q 键,则转到 Linux 控制台并结束程序。
我试过了
#include <curses.h> // required
int r,c, // current row and column (upper-left is (0,0))
nrows, // number of rows in window
ncols; // number of columns in window
void draw(char dc)
{ move(r,c); // curses call to move cursor to row r, column c
delch(); insch(dc); // curses calls to replace character under cursor by dc
refresh(); // curses call to update screen
r++; // go to next row
// check for need to shift right or wrap around
if (r == nrows) {
r = 0;
c++;
if (c == ncols) c = 0;
}
}
main()
{ int i; char d;
WINDOW *wnd;
wnd = initscr(); // curses call to initialize window
cbreak(); // curses call to set no waiting for Enter key
noecho(); // curses call to set no echoing
getmaxyx(wnd,nrows,ncols); // curses call to find size of window
clear(); // curses call to clear screen, send cursor to position (0,0)
refresh(); // curses call to implement all changes since last refresh
r = 0; c = 0;
while (1) {
d = getch(); // curses call to input from keyboard
if (d == 'q') break; // quit?
draw(d); // draw the character
}
endwin(); // curses call to restore the original window and leave
}
但它有问题,例如识别 shift 键和 valgrind 说
==11693== still reachable: 59,676 bytes in 97 blocks
【问题讨论】:
-
我尝试了 ncurses,但 valgrind 说我有一些内存泄漏,我的代码无法识别所有键。
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这太宽泛了,除非您有一些您尝试过的代码,否则您应该删除它或将其移至程序员 Stack Exchange。如果你有代码。请把它编辑成问题,这样我们就可以看到你已经走了多远。