Read this chapter folks, ask all the questions you need
http://www.statutes.legis.state.tx.us/Docs/PE/htm/PE.46.htm
(1) on the premises of a business that has a permit or license issued under Chapter 25, 28, 32, 69, or 74, Alcoholic Beverage Code, if the business derives 51 percent or more of its income from the sale or service of alcoholic beverages for on-premises consumption, as determined by the Texas Alcoholic Beverage Commission under Section 104.06, Alcoholic Beverage Code;(2) on the premises where a high school, collegiate, or professional sporting event or interscholastic event is taking place, unless the license holder is a participant in the event and a handgun is used in the event;(3) on the premises of a correctional facility;(4) on the premises of a hospital licensed under Chapter 241, Health and Safety Code, or on the premises of a nursing home licensed under Chapter 242, Health and Safety Code, unless the license holder has written authorization of the hospital or nursing home administration, as appropriate;(5) in an amusement park; or(6) on the premises of a church, synagogue, or other established place of religious worship.(c) A license holder commits an offense if the license holder intentionally, knowingly, or recklessly carries a handgun under the authority of Subchapter H, Chapter 411, Government Code, regardless of whether the handgun is concealed, at any meeting of a governmental entity.(d) A license holder commits an offense if, while intoxicated, the license holder carries a handgun under the authority of Subchapter H, Chapter 411, Government Code, regardless of whether the handgun is concealed.
Note that premises is definded as the building..
