Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I add several JButtons to JPanel, and setOpaque(false) for JPanel. When I move mouse onto the JButton, here appears a square under the button,and quickly disappears,which makes me feel awful.Does anyone know what is wrong?
(sorry for my poor English)
False is the default value for setOpaque as stated in the JComponent javadoc.
This is related to the effort it made to draw the components on the screen, when the property is set to true, then all the pixels of the component are drawn onscreen.