C# 遊戲手柄程式開發——API 篇（三）下：鍵盤模擬 keybd_event 封裝與成品展示

鍵盤模擬 API

[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint dwExtraInfo);

• bVk：虛擬鍵碼，對應 System.Windows.Forms.Keys
• dwFlags 組合：KEYEVENTF_KEYDOWN (按下)、KEYEVENTF_KEYUP (釋放)、KEYEVENTF_EXTENDEDKEY (擴充鍵)

封裝輔助列舉與方法

[Flags]
public enum KeyboardEvents {
    None = 0x0, KeyDown = 0x1, KeyUp = 0x2
}

public static void SendKeyEvent(Keys key, KeyboardEvents events) {
    if ((events & KeyboardEvents.KeyDown) == KeyboardEvents.KeyDown)
        keybd_event((byte)key, 0, KEYEVENTF_KEYDOWN, 0);
    if ((events & KeyboardEvents.KeyUp) == KeyboardEvents.KeyUp)
        keybd_event((byte)key, 0, KEYEVENTF_KEYUP, 0);
}

使用範例

• 模擬按下 A：SendKeyEvent(Keys.A, KeyboardEvents.KeyDown)
• 模擬按下並釋放 A：SendKeyEvent(Keys.A, KeyboardEvents.KeyDown | KeyboardEvents.KeyUp)

成品截圖

使用方式：設定各手柄按鈕對應鍵盤鍵碼（點擊對應欄位按鍵盤按鍵即可），啟用模擬，最小化視窗後切換至遊戲即可用手柄操作。