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MathGroup Archive 2011

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Re: about the use of button

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115210] Re: about the use of button
  • From: "W. Craig Carter" <ccarter at mit.edu>
  • Date: Tue, 4 Jan 2011 04:26:40 -0500 (EST)

Hello Yang,
Try this:

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carWeight == tareWeight;
personNumber == 0;

Row[{Button["A person enters", {carWeight +== 60, personNumber++}],
  Dynamic[{carWeight, personNumber}]}]

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You must avoid underscores "_" in variable names. It is a good habit to use an lower case letter to begin each variable name. Notice that Dynamic sits outside the button--that is the only place you need to see the current (i.  e., dynamic) values.

Craig


On 28 Dec,   2010, at 6:51 AM, yang wrote:

> Button["A person enters",
> {Dynamic[car_weight+==60],Dynamic[person_number++}]]



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