c语言读取pc手柄按键

要读取 PC 手柄按键，需要使用 Windows API 中的 joyGetPosEx 函数。以下是一个简单的示例代码，可以读取 PC 手柄的按键状态：

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

// 定义手柄按键的常量值
#define JOY_BUTTON_1    0x0001
#define JOY_BUTTON_2    0x0002
#define JOY_BUTTON_3    0x0004
#define JOY_BUTTON_4    0x0008
#define JOY_BUTTON_5    0x0010
#define JOY_BUTTON_6    0x0020
#define JOY_BUTTON_7    0x0040
#define JOY_BUTTON_8    0x0080
#define JOY_BUTTON_9    0x0100
#define JOY_BUTTON_10   0x0200
#define JOY_BUTTON_11   0x0400
#define JOY_BUTTON_12   0x0800
#define JOY_BUTTON_13   0x1000
#define JOY_BUTTON_14   0x2000
#define JOY_BUTTON_15   0x4000
#define JOY_BUTTON_16   0x8000

// 定义手柄结构体
typedef struct {
    int x, y;           // 左右摇杆的 X、Y 坐标
    int z, rz;          // 没有使用
    int buttons;        // 按键状态
    int hat;            // 十字键状态
} JOY_STATE;

int main()
{
    JOY_STATE joyState;
    JOYINFOEX joyInfo;
    MMRESULT result;

    // 获取第一个手柄的状态
    joyState.buttons = 0;
    joyState.hat = -1;
    joyState.x = joyState.y = joyState.z = joyState.rz = 0;

    joyInfo.dwSize = sizeof(JOYINFOEX);
    joyInfo.dwFlags = JOY_RETURNALL;

    result = joyGetPosEx(JOYSTICKID1, &joyInfo);
    if (result == JOYERR_NOERROR) {
        joyState.x = joyInfo.dwXpos;
        joyState.y = joyInfo.dwYpos;
        joyState.z = joyInfo.dwZpos;
        joyState.rz = joyInfo.dwRzpos;
        joyState.buttons = joyInfo.dwButtons;
        joyState.hat = joyInfo.dwPOV / 4500;     // 十字键状态为 0-7 的整数
    }

    // 显示按键状态
    printf("Buttons: ");
    if (joyState.buttons & JOY_BUTTON_1) printf("1 ");
    if (joyState.buttons & JOY_BUTTON_2) printf("2 ");
    if (joyState.buttons & JOY_BUTTON_3) printf("3 ");
    if (joyState.buttons & JOY_BUTTON_4) printf("4 ");
    if (joyState.buttons & JOY_BUTTON_5) printf("5 ");
    if (joyState.buttons & JOY_BUTTON_6) printf("6 ");
    if (joyState.buttons & JOY_BUTTON_7) printf("7 ");
    if (joyState.buttons & JOY_BUTTON_8) printf("8 ");
    if (joyState.buttons & JOY_BUTTON_9) printf("9 ");
    if (joyState.buttons & JOY_BUTTON_10) printf("10 ");
    if (joyState.buttons & JOY_BUTTON_11) printf("11 ");
    if (joyState.buttons & JOY_BUTTON_12) printf("12 ");
    if (joyState.buttons & JOY_BUTTON_13) printf("13 ");
    if (joyState.buttons & JOY_BUTTON_14) printf("14 ");
    if (joyState.buttons & JOY_BUTTON_15) printf("15 ");
    if (joyState.buttons & JOY_BUTTON_16) printf("16 ");
    printf("\n");

    // 显示左右摇杆的坐标
    printf("Left Joystick: (%d, %d)\n", joyState.x, joyState.y);
    printf("Right Joystick: (%d, %d)\n", joyState.z, joyState.rz);

    // 显示十字键状态
    if (joyState.hat == 0) printf("Up\n");
    else if (joyState.hat == 1) printf("Up-Right\n");
    else if (joyState.hat == 2) printf("Right\n");
    else if (joyState.hat == 3) printf("Down-Right\n");
    else if (joyState.hat == 4) printf("Down\n");
    else if (joyState.hat == 5) printf("Down-Left\n");
    else if (joyState.hat == 6) printf("Left\n");
    else if (joyState.hat == 7) printf("Up-Left\n");
    else printf("Center\n");

    return 0;
}

注意，上述代码需要在 Windows 系统中运行，而且需要链接 winmm 库。