编译都过不了－－小师妹的简单问题

[wangjiamin]

用VC写程序，将LPTSTR类型的变量转换为LPCWSTR，程序如下：
＃include "atlconv.h"

....
LPTSTR fileName = "e:\\water.mpg";
LPCWSTR f = T2W(fileName);

编译时说我包含的头文件中有很多错误，这些头文件都是VC提供的，不是我自己写的，应该没问题吧
这是怎么回事？
编译信息如下：
Compiling...
player.cpp
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(48) : error C2065: '_ASSERTE' : undeclared identifier
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(237) : error C2065: 'offsetof' : undeclared identifier
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(237) : error C2275: 'DEVMODEW' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1870) : see declaration of 'DEVMODEW'
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(237) : error C2065: 'dmFormName' : undeclared identifier
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(237) : error C2275: 'DEVMODEW' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1870) : see declaration of 'DEVMODEW'
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(237) : error C2065: 'dmSpecVersion' : undeclared identifier
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(240) : error C2275: 'DEVMODEW' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1870) : see declaration of 'DEVMODEW'
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(240) : error C2065: 'dmLogPixels' : undeclared identifier
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(350) : error C2275: 'DEVMODEA' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1825) : see declaration of 'DEVMODEA'
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(350) : error C2275: 'DEVMODEA' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1825) : see declaration of 'DEVMODEA'
c:\program files\microsoft visual studio\vc98\atl\include\atlconv.h(353) : error C2275: 'DEVMODEA' : illegal use of this type as an expression
c:\program files\microsoft visual studio\vc98\include\wingdi.h(1825) : see declaration of 'DEVMODEA'
E:\vc project\player\player.cpp(210) : error C2065: '_lpa' : undeclared identifier
E:\vc project\player\player.cpp(210) : error C2440: '=' : cannot convert from 'char *' to 'int'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast
E:\vc project\player\player.cpp(210) : error C2065: '_convert' : undeclared identifier
Error executing cl.exe.

player.obj - 14 error(s), 0 warning(s)

[xystarch]

缺少头文件吧!

[AVactress]

在前面加
＃include <stddef.h>

[ruihuahan]

在使用T2W宏的函数的开头加如下语句：

USES_CONVERSION;

[phiger]

add line USES_CONVERSION;
at the start of function!

[skybblue]

把 #include "atlconv.h" 改成 #include "atlbase.h" 就行了！

[见招拆招]

楼主的问题 解决了没有

[Earthdog]

同意ruihuahan(飞不起来的笨鸟)

在使用T2W宏的函数的开头加如下语句：

USES_CONVERSION;

[cboy2wzhx]

UP

[coyer]

向小师妹学习。