WINCE6.0自动加载流驱动

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1、WINCE自动加载流驱动********************************LoongEmbedded********************************作者：LoongEmbedded(kandi)时间：2010.11.13类别：WINCE应用开发********************************LoongEmbedded********************************软件环境：WINCE6.0+VS2005动态加载在系统启动之后根据需要来加载，

2、而不是在系统启动过程中加载，就动态加载CMC.dll驱动为例来说明大概需要的工作：1.在platform.bib中通过下面语句把CMC.dl放在windows文件夹下面CMC.dll$(_FLATRELEASEDIR)CMC.dllNKSHK2.创建注册表子键并在此驱动注册表子键中写键值，键值是由键值名称和键值的值组成的。下面介绍需要用的的注册表相关函数。⑴RegCreateKeyEx函数RegCreateKeyEx函数头如下：LONGRegCreateKeyEx(HKEYhKey,LPCWSTRl

3、pSubKey,DWORDReserved,LPWSTRlpClass,DWORDdwOptions,REGSAMsamDesired,LPSECURITY_ATTRIBUTESlpSecurityAttributes,PHKEYphkResult,LPDWORDlpdwDisposition);下面来看这些参数的描述ParametershKey[in]Handletoacurrentlyopenkeyoroneofthefollowingpredefinedreservedhandlevalues:

4、HKEY_CLASSES_ROOTHKEY_CURRENT_USERHKEY_LOCAL_MACHINEHKEY_USERSWindowsCEdoesnotsupporttheHKEY_CURRENT_CONFIG,HKEY_PERFORMANCE_DATA,orHKEY_DYN_DATApredefinedreservedhandlevalues.ThekeyopenedorcreatedbytheRegCreateKeyExfunctionisasubkeyofthekeyidentifiedby

5、thehKeyparameter.lpSubKey[in]Pointertoanull-terminatedstringspecifyingthenameofasubkeythatthisfunctionopensorcreates.ThesubkeyspecifiedmustbeasubkeyofthekeyidentifiedbythehKeyparameter.Thissubkeymustnotbeginwiththebackslashcharacter().IftheparameterisN

6、ULL,thenRegCreateKeyExbehaveslikeRegOpenKeywhereitopensthekeyspecifiedbyhKey.InWindowsCE,themaximumlengthofakeynameis255characters,notincludingtheterminatingNULLcharacter.Youcanalsoonlynest16levelsofsub-keysinWindowsCE.Reserved[in]Reserved;setto0.lpClas

7、s[in]Pointertoanull-terminatedstringthatspecifiestheclass(objecttype)ofthiskey.Thisparameterisignoredifthekeyalreadyexists.InWindowsCE,themaximumlengthofaclassstringis255characters,notincludingtheterminatingNULLcharacter.dwOptions[in]Registrykeyoptions.

8、REG_OPTION_NON_VOLATILE：Defaultsetting.Allregistrykeysarecreatedasnon-volatileandtheinformationstoredinmemoryispreservedwhentheOSisrestarted.TheRegSaveKeyfunctionsaveskeysthatarenon-volatile.REG_OPTION_VOLATILE：Allregistrykeysare