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$DynamicEvaluation
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$DynamicEvaluation

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is a symbol whose value is True if it is evaluated as part of the evaluation of a Dynamic.

Examples

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Basic Examples  (2)Summary of the most common use cases

Detect whether an evaluation is occurring inside Dynamic:

In[1]:=1
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https://wolfram.com/xid/0mlpxxllhqb2-xmv1vy
Out[1]=1

The evaluations are inside a Dynamic for Manipulate:

In[1]:=1
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https://wolfram.com/xid/0mlpxxllhqb2-hb95fy
Out[1]=1

Applications  (1)Sample problems that can be solved with this function

A function that returns messages causes Dynamic values to pink:

In[1]:=1
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https://wolfram.com/xid/0mlpxxllhqb2-l0qo9v
Out[1]=1
In[2]:=2
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https://wolfram.com/xid/0mlpxxllhqb2-jmdmg3
Out[2]=2

Use $DynamicEvaluation to print the message in regular evaluations while suppressing the pink box in Dynamic:

In[3]:=3
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https://wolfram.com/xid/0mlpxxllhqb2-bt4mce
Out[3]=3
In[4]:=4
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https://wolfram.com/xid/0mlpxxllhqb2-ml964l
Out[4]=4
Wolfram Research (2007), $DynamicEvaluation, Wolfram Language function, https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.
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Wolfram Research (2007), $DynamicEvaluation, Wolfram Language function, https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.

Text

Wolfram Research (2007), $DynamicEvaluation, Wolfram Language function, https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.

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Wolfram Research (2007), $DynamicEvaluation, Wolfram Language function, https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.

CMS

Wolfram Language. 2007. "$DynamicEvaluation." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.

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Wolfram Language. 2007. "$DynamicEvaluation." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$DynamicEvaluation.html.

APA

Wolfram Language. (2007). $DynamicEvaluation. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$DynamicEvaluation.html

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Wolfram Language. (2007). $DynamicEvaluation. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$DynamicEvaluation.html

BibTeX

@misc{reference.wolfram_2025_$dynamicevaluation, author="Wolfram Research", title="{$DynamicEvaluation}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/$DynamicEvaluation.html}", note=[Accessed: 29-March-2025 ]}

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@misc{reference.wolfram_2025_$dynamicevaluation, author="Wolfram Research", title="{$DynamicEvaluation}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/$DynamicEvaluation.html}", note=[Accessed: 29-March-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_$dynamicevaluation, organization={Wolfram Research}, title={$DynamicEvaluation}, year={2007}, url={https://reference.wolfram.com/language/ref/$DynamicEvaluation.html}, note=[Accessed: 29-March-2025 ]}

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@online{reference.wolfram_2025_$dynamicevaluation, organization={Wolfram Research}, title={$DynamicEvaluation}, year={2007}, url={https://reference.wolfram.com/language/ref/$DynamicEvaluation.html}, note=[Accessed: 29-March-2025 ]}