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javaのコード http://www.hellohiro.com/swing.htm import javax.swing.*; public class HelloWorldSwing { public static void main(String[] args) { JFrame frame = new JFrame("HelloWorldSwing"); final JLabel label = new JLabel("Hello World"); fra…

void Vec2dPerp(D3DXVECTOR2 *ov, D3DXVECTOR2 *iv) { ov->x = -iv->y; ov->y = iv->x; }