Multiple key presses doing different events in C#

Question

private void Form1_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.W) player1.moveUp(); if (e.KeyCode == Keys.NumPad8) player2.moveUp(); }

In the above code the moveUp methods basically just increment a value. I want it so both keys can be pressed (or held down)at the same time and both events will trigger. Thanks, Nevik

And what is the problem? I think you code ought to work. But Nayan has a better option. — Henk Holterman

Nayan Nayan · Accepted Answer · 2010-04-21T19:46:44

Get the state of the keyboard and check for the status of the keys that you want.

Events are not the best way to go in gaming. You need faster response.

[DllImport("user32.dll")]
public static extern int GetKeyboardState(byte [] lpKeyState);
...
byte[] bCharData = new byte[256];
GetKeyboardState(bCharData);

Another way, taken from here,

[DllImport("user32.dll")]
static extern short GetKeyState(VirtualKeyStates nVirtKey);
...
public static bool IsKeyPressed(VirtualKeyStates testKey)
{
    bool keyPressed = false;
    short result= GetKeyState(testKey);

    switch (result)
    {
        case 0:
            // Not pressed and not toggled on.
            keyPressed = false;
            break;

        case 1:
            // Not pressed, but toggled on
            keyPressed = false;
            break;

        default:
            // Pressed (and may be toggled on)
            keyPressed = true;
            break;
    }

    return keyPressed;
}

Multiple key presses doing different events in C#

2 Answers