带有数组的DrawText [英] DrawText with an array

问题描述

你好，这个编码基于2008年。呃，任何人都可以教我如何转换成visual 2012版本。我只知道如何用文字书写，只需在DrawText中添加_T infront。

Hello this coding is based in 2008. Er, can anyone teach me how to convert in into visual 2012 version. I only know how to write in text, just add _T infront of it in DrawText.

static const char* days[] = { "MON", "THU", "WED", "THR", "FRI" };



                    dc.DrawText( (days[i-1], 3, rect, DT_CENTER | DT_VCENTER | DT_SINGLELINE );

错误在这里。

The error is here.

childview.cpp(194): error C2664: 'int CDC::DrawTextW(LPCTSTR,int,LPRECT,UINT)' : cannot convert parameter 1 from 'const char *' to 'LPCTSTR'

推荐答案

不，可能你没有达到 _t 的目的:-)。



简而言之：使用 LPCTSTR ，你需要使用 TCHAR 而不是 char 。



您需要了解那些通用的T类型;它们的实际含义是有条件的，它取决于你如何编译你的代码，如果不是Unicode。



这个CodeProject文章提供了很好的解释：什么是TCHAR，WCHAR，LPSTR，LPWSTR，LPCTSTR（等等）？ [ ^ ]。

-SA

No, probably you did not get the purpose of _t :-).

In brief: to work with LPCTSTR, you would need to use TCHAR instead of char.

You need to understand those generic "T" types; their actual meaning is conditional, it depends on how you compile your code, as Unicode or not.

This CodeProject article provides good explanation of the matter: What are TCHAR, WCHAR, LPSTR, LPWSTR, LPCTSTR (etc.)?[^].

—SA

你必须使用TCHAR。

You have to use TCHAR.

static const char* days[] = { "MON", "THU", "WED", "THR", "FRI" };



                    dc.DrawText( (_T(days[i-1]), 3, rect, DT_CENTER | DT_VCENTER | DT_SINGLELINE );

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