什么时候WPARAM从签名变为无符号？

问题描述

 在Delphi 6中 WPARAM  WPARAM = Longint; 
  

在Delphi 2010中 WPARAM 被声明为签名：

  WPARAM = INT_PTR; 
  

但在XE2中，它被声明为unsigned：

  WPARAM = UINT_PTR; 
  

官方是：

  typedef UINT_PTR WPARAM; 
  

与XE2匹配。

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$有没有人知道更改是针对XE还是XE2？

解决方案

Delphi XE WPARAM = INT_PTR; 所以更改是在XE2中引入的。

In Delphi 6 WPARAM is declared as being signed:

WPARAM = Longint;

In Delphi 2010 WPARAM is declared as being signed:

WPARAM = INT_PTR;

But in XE2 it is declared as being unsigned:

WPARAM = UINT_PTR;

The official Windows definition is:

typedef UINT_PTR WPARAM;

This matches with XE2.

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Does anyone know whether the change was made for XE or for XE2?

解决方案

In Delphi XE WPARAM = INT_PTR; so the change was introduced in XE2.

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