24 lines
636 B
Markdown
24 lines
636 B
Markdown
<!-- 29 may 2019 -->
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# Controls
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## Overview
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TODO
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## Reference
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### `uiControl`
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```c
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typedef struct uiControl uiControl;
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uint32_t uiControlType(void);
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#define uiControl(obj) ((uiControl *) uiCheckControlType((obj), uiControlType()))
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```
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`uiControl` is an opaque type that describes a control.
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`uiControl()` is a conversion macro for casting a pointer of a specific control type (or a `void *`) to `uiControl` while also checking for errors.
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`uiControlType()` is the type identifier of a `uiControl` as passed to `uiControlCheckType()`. You rarely need to call this directly; the `uiControl()` conversion macro does this for you.
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