27 lines
1.1 KiB
Markdown
27 lines
1.1 KiB
Markdown
<!-- 10 june 2019 -->
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# Controls on macOS
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## Overview
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TODO
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## Reference
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### `uiControlOSVtable`
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```c
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typedef struct uiControlOSVtable uiControlOSVtable;
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struct uiControlOSVtable {
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size_t Size;
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};
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```
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`uiControlOSVtable` describes the set of functions that control implementations on macOS need to implement. When registering your control type, you pass this in as a parameter to `uiRegisterControlType()`. Each method here is required.
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You are responsible for allocating and initializing this struct. To do so, you simply zero the memory for this struct and set its `Size` field to `sizeof (uiControlOSVtable)`. (TODO put this in a common place)
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Each method takes at least two parameters. The first, `c`, is the `uiControl` itself. The second, `implData`, is the implementation data pointer; it is the same as the pointer returned by `uiControlImplData(c)`, and is provided here as a convenience.
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Each method is named for the `uiDarwinControl` function that it implements. As such, details on how to implement these methods are documented alongside those functions. For instance, instructions on implementing `TODO()` are given under the documentation for `TODO()`.
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