dotnet-api
dotnet-framework-api
- C1.Win.4.8 Assembly
- C1.Win.C1InputPanel.4.8 Assembly

C1.Util.Win.Win32.AssocQueryString

AssocQueryString Method

AssocQueryString(int, int, string, string, StringBuilder, ref uint)

Gets file-association string from the registry.

Declaration

public static extern uint AssocQueryString(int flags, int str, string pszAssoc, string pszExtra, StringBuilder pszOut, ref uint pcchOut)

Parameters

Type	Name	Description
int	flags	Use Win32.ASSOCF constants.
int	str	Use Win32.ASSOCSTR constants.
string	pszAssoc
string	pszExtra
StringBuilder	pszOut
uint	pcchOut

Returns

Type	Description
uint	An Win32.OLE success/error code.

Remarks

To get associated exe's length/exe:

uint assocLen = 0;
AssocQueryString(ASSOCF.ASSOCF_INIT_DEFAULTTOSTAR,ASSOCSTR.ASSOCSTR_EXECUTABLE,Path.GetExtension(OutputFileName),"open",null,ref assocLen);

For existing files, another option is FindExecutable.