Question

我希望在程序的任何时候通过提供文件名来更改光标。我打电话给：

setCursor(defaultcursor);

函数setCursor如下所示：

private void setCursor(String image)
    {
        File file = new File("res/Cursors/"+image+".png");

        IntBuffer ib = null;
        try {
            FileChannel fc = new FileInputStream(file).getChannel();
            ib = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size())
                    .order(ByteOrder.LITTLE_ENDIAN).asIntBuffer();

            ib.rewind();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

        try 
        {
            org.lwjgl.input.Cursor cursor = new org.lwjgl.input.Cursor(32, 32, 0, 0, 1, ib, null);
            Mouse.setNativeCursor(cursor);
        } 
        catch (LWJGLException e) 
        {
            e.printStackTrace();
        }
    }

问题是我在屏幕上看到的只是一些彩色像素。根本不是我想要的形象。当我想增加宽度和高度时。我收到这个错误：

Exception in thread "main" java.lang.IllegalArgumentException: Number of remaining buffer elements is 184, must be at least 1024. Because at most 1024 elements can be returned, a buffer with at least 1024 elements is required, regardless of actual returned element count
    at org.lwjgl.BufferChecks.throwBufferSizeException(BufferChecks.java:162)
    at org.lwjgl.BufferChecks.checkBufferSize(BufferChecks.java:189)
    at org.lwjgl.input.Cursor.<init>(Cursor.java:89)
    at Entities.Player.setCursor(Player.java:86)
    at Entities.Player.checkInputs(Player.java:138)
    at Entities.Player.move(Player.java:51)
    at EngineTester.MainGameLoop.main(MainGameLoop.java:82)

Java使用lwjgl Cursor函数更改cursorImage

0 个答案: