J2ME图像透明化的实现 getRGB可以得到当前图片的Alpha数值，改一下就可以了。FF为不透明。00为全透明。 -J2ME implementation of the image transparent getRGB can get the current picture of the Alpha value to change a bit on it. FF is opaque. 00 for the whole transparent.

自定义图像按钮，支持透明，图片+文字,类似windows mobile 6.5主题上的图标按钮-user image button with picture and text,support alpha