鼠标滚轮消息(sdk)

[World7th]

这种编译错误是为何？



f:\program\sysmets4\sysmets4.c(152) : error C2065: 'SM_MOUSEWHEELPRESENT' : undeclared identifier
f:\program\sysmets4\sysmets4.c(152) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(152) : warning C4047: 'initializing' : 'int ' differs in levels of indirection from 'char [21]'
f:\program\sysmets4\sysmets4.c(154) : error C2065: 'SM_XVIRTUALSCREEN' : undeclared identifier
f:\program\sysmets4\sysmets4.c(154) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(155) : warning C4047: 'initializing' : 'int ' differs in levels of indirection from 'char [24]'
f:\program\sysmets4\sysmets4.c(156) : error C2065: 'SM_YVIRTUALSCREEN' : undeclared identifier
f:\program\sysmets4\sysmets4.c(156) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(158) : error C2065: 'SM_CXVIRTUALSCREEN' : undeclared identifier
f:\program\sysmets4\sysmets4.c(158) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(158) : warning C4047: 'initializing' : 'int ' differs in levels of indirection from 'char [19]'
f:\program\sysmets4\sysmets4.c(160) : error C2065: 'SM_CYVIRTUALSCREEN' : undeclared identifier
f:\program\sysmets4\sysmets4.c(160) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(161) : warning C4047: 'initializing' : 'int ' differs in levels of indirection from 'char [22]'
f:\program\sysmets4\sysmets4.c(162) : error C2065: 'SM_CMONITORS' : undeclared identifier
f:\program\sysmets4\sysmets4.c(162) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(164) : error C2065: 'SM_SAMEDISPLAYFORMAT' : undeclared identifier
f:\program\sysmets4\sysmets4.c(164) : error C2099: initializer is not a constant
f:\program\sysmets4\sysmets4.c(164) : warning C4047: 'initializing' : 'int ' differs in levels of indirection from 'char [21]'
f:\program\sysmets4\sysmets4.c(241) : error C2065: 'SPI_GETWHEELSCROLLLINES' : undeclared identifier
f:\program\sysmets4\sysmets4.c(247) : error C2065: 'WHEEL_DELTA' : undeclared identifier
f:\program\sysmets4\sysmets4.c(422) : error C2065: 'WM_MOUSEWHEEL' : undeclared identifier
f:\program\sysmets4\sysmets4.c(422) : error C2051: case expression not constant

[truewill]

就是SM_MOUSEWHEELPRESENT等没有定义咯

找一下这些定义在哪里

[hushuangyan74]

SM_MOUSEWHEELPRESENT等等常量没有定义呀。
如果你把你的代码放到这里，也许能解决问题！

[柯本]

我也碰到过,我的VC6.0很怪,明明是在w2k下,它的WINVER 却是0x0400,(应该是0x0501)
使winuser.h中的
#if (WINVER >= 0x0500) || (_WIN32_WINNT >= 0x0400)
#define SM_MOUSEWHEELPRESENT 75
#endif
SM_MOUSEWHEELPRESENT 没有定义
我是直接在StdAfx.h加
#define WINVER 0x0501
这样就可,但总觉得应有更好的办法

[World7th]

我头文件都已经加进去了，而且头文件里面也有定义，不知道什么原因，难道win2000不支持滚轮消息？