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Clean up "Data Types (MFC)" topic #5469

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Remove huge amounts of superfluous spaces in "Data Types (MFC)" topic
Rageking8 Jun 27, 2025
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Tidy up "See also" section in "Data Types (MFC)" topic
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Add link to `RECT` in "Data Types (MFC)" topic
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20 changes: 9 additions & 11 deletions docs/mfc/reference/data-types-mfc.md
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---
description: "Learn more about: Data Types (MFC)"
title: "Data Types (MFC)"
ms.date: "11/04/2016"
description: "Learn more about: Data Types (MFC)"
ms.date: 11/04/2016
f1_keywords: ["LPCRECT", "POSITION"]
helpviewer_keywords: ["LPCRECT data type [MFC]", "WPARAM data type [MFC]", "data types [MFC], MFC", "LRESULT [MFC]", "POSITION data type [MFC]", "UINT [MFC]", "LPVOID data type [MFC]", "COLORREF [MFC]", "LPCTSTR [MFC]", "LPSTR [MFC]", "DWORD operator [MFC]", "WORD data type [MFC]", "LPTSTR [MFC]", "BYTE data type (Windows)", "Long data type [MFC], Windows types", "Boolean data type [MFC], supported data types", "LPARAM data type [MFC]", "LPCSTR [MFC]"]
ms.assetid: 8954848b-2c01-4a4f-abf5-ee55f6a05eeb
---
# Data Types (MFC)

This topic lists the data types most commonly used in the Microsoft Foundation Class Library. Most of the data types are the same as those in the Platform Software Development Kit (SDK), while others are unique to MFC.

For information about the data types used in both the Windows SDK and MFC, see [Windows Data Types](/windows/win32/WinProg/windows-data-types).
This topic lists the data types most commonly used in the Microsoft Foundation Class (MFC) Library. Most of the data types are the same as those in the Platform Software Development Kit (SDK), while others are unique to MFC.

Data types unique to the Microsoft Foundation Class Library include the following:
For information about the data types used in both the Windows SDK and MFC, see [Windows Data Types](/windows/win32/WinProg/windows-data-types).

- POSITION A value used to denote the position of an element in a collection; used by MFC collection classes.
Data types unique to MFC include the following:

- LPCRECT A 32-bit pointer to a constant (nonmodifiable) `RECT` structure.
- `POSITION` - A value used to denote the position of an element in a collection; used by MFC collection classes.
- `LPCRECT` - A 32-bit pointer to a constant (nonmodifiable) [`RECT`](/windows/win32/api/windef/ns-windef-rect) structure.

## See also

[Class Overview](../../mfc/class-library-overview.md)<br/>
[Macros and Globals](../../mfc/reference/mfc-macros-and-globals.md)
[Class Overview](../class-library-overview.md)\
[Macros and Globals](mfc-macros-and-globals.md)