api 修改注册表 没有反应

[ImJaden]

我想能过win32程序修改注册表达到控制显示文件后缀的功能，可是没有达到效果，请指示一下，问题出在那里了？

	                  HKEY  Key;
			DWORD RegVal,NewVal;
			//DWORD dwType,dwSize= MAX_PATH;
			LONG LResult;

			LResult=RegOpenKeyEx(HKEY_CURRENT_USER,"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced",
				0,KEY_READ, &Key);

			if(LResult!=ERROR_SUCCESS)
			{
				MessageBox(hwnd,"Open Error","",MB_OK);
				break;
			}
			
			 LResult=RegQueryValueEx(Key,(LPSTR)"HideFileExt",NULL,&dwType,(BYTE *) 
				®Val,&dwSize);
			 
			if(LResult!=ERROR_SUCCESS) 
			{
		    	MessageBox(hwnd,Temp,"",MB_OK);
			   break;
			}
			switch(RegVal)
			{
			case 0:NewVal=1;
				RegSetValueEx(Key,"HideFileExt",0L,REG_DWORD,(CONST BYTE *)&NewVal,sizeof(DWORD)); 
				break;
			case 1:NewVal=0;
				RegSetValueEx(Key,"HideFileExt",0L,REG_DWORD,(CONST BYTE *)&NewVal,sizeof(DWORD)); 
				break;
			}

			RegCloseKey (Key); 

[lazy_2010]

HKEY_CURRENT_USER,"HKEY_CURRENT_USER\\Software

修改成

HKEY_CURRENT_USER,"Software

试一试

[ImJaden]

[Quote=引用 2 楼 huangcheng90 的回复:]
你路径写得有问题 HKEY_CURRENT_USER已经指定了根键了 后面直接从“software”开始
[/Quote]
修改后还是不行，读取值一直都是1，这是怎么回事？

[手机写程序]

LResult=RegOpenKeyEx(HKEY_CURRENT_USER,"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Advanced",
0,KEY_READ, &Key);



KEY_ALL_ACCESS Combines the STANDARD_RIGHTS_REQUIRED, KEY_QUERY_VALUE, KEY_SET_VALUE, KEY_CREATE_SUB_KEY, KEY_ENUMERATE_SUB_KEYS, KEY_NOTIFY, and KEY_CREATE_LINK access rights.
KEY_CREATE_LINK Reserved for system use.
KEY_CREATE_SUB_KEY Required to create a subkey of a registry key.
KEY_ENUMERATE_SUB_KEYS Required to enumerate the subkeys of a registry key.
KEY_EXECUTE Equivalent to KEY_READ.
KEY_NOTIFY Required to request change notifications for a registry key or for subkeys of a registry key.
KEY_QUERY_VALUE Required to query the values of a registry key.
KEY_READ Combines the STANDARD_RIGHTS_READ, KEY_QUERY_VALUE, KEY_ENUMERATE_SUB_KEYS, and KEY_NOTIFY values.
KEY_SET_VALUE Required to create, delete, or set a registry value.
KEY_WOW64_32KEY Indicates that an application on 64-bit Windows should operate on the 32-bit registry view. For more information, see Accessing an Alternate Registry View.
This flag must be combined using the OR operator with the other flags in this table that either query or access registry values.

KEY_WOW64_64KEY Indicates that an application on 64-bit Windows should operate on the 64-bit registry view. For more information, see Accessing an Alternate Registry View.
This flag must be combined using the OR operator with the other flags in this table that either query or access registry values.

KEY_WRITE Combines the STANDARD_RIGHTS_WRITE, KEY_SET_VALUE, and KEY_CREATE_SUB_KEY access rights.

[lazy_2010]

#4 说的是写注册表，如果是读取的问题，dwSize 可能没有写初始值 4

[青稞]

打开读写权限吧，以前用KEY_ALL_ACCESS最方便，什么都可以。
但貌似Vista之后，直接用KEY_ALL_ACCESS有时候就不行的，必须显示指定权限

[Dreadnought]

你路径写得有问题 HKEY_CURRENT_USER已经指定了根键了 后面直接从“software”开始