X# Runtime and VO SDK Reference
X# Runtime and SDK Reference
XSharp.VO Namespace
Functions, Globals and Defines
List of Functions
_Run Function (VO)
Crypt Function (VO)
CryptA Function (VO)
CryptRaw Function (VO)
DeleteRTRegKey Function (VO)
DoSendMail Function (VO)
ErrorDialog Function (VO)
ErrorNew Function (VO)
GetAppLocaleID Function (VO)
GetDASPtr Function (VO)
GetMimeType Function (VO)
InitializeErrorDialogHandler Function (VO)
ItemPutL Function (VO)
ItemPutND Function (VO)
ItemPutNL Function (VO)
ItemRegister Function (VO)
ItemRelease Function (VO)
ItemReturn Function (VO)
ItemSize Function (VO)
ItemType Function (VO)
LoadResString Function (VO)
MBAllTrim Function (VO)
MBAt Function (VO)
MBAt2 Function (VO)
MBAt3 Function (VO)
MBAtC Function (VO)
MBAtC2 Function (VO)
MBAtLine Function (VO)
MBAtLine2 Function (VO)
MBLEFT Function (VO)
MBLen Function (VO)
MBLTrim Function (VO)
MBRat Function (VO)
MBRat2 Function (VO)
MBRat3 Function (VO)
MBRight Function (VO)
MBRTrim Function (VO)
MBSLen Function (VO)
MBStuff Function (VO)
MBSubstr Function (VO)
MBSubstr2 Function (VO)
MBSubstr3 Function (VO)
MBTrim Function (VO)
NVersion Function (VO)
OClone Function (VO)
OleDateTimeAsDate Function (VO)
PtrLen Function (VO)
PtrLenWrite Function (VO)
QueryRTRegInt Function (VO)
QueryRTRegString Function (VO)
SetAppLocaleID Function (VO)
SetClipCompFunc Function (VO)
SetRTRegInt Function (VO)
SetRTRegString Function (VO)
SetWinCompFlags Function (VO)
SetWinCompFunc Function (VO)
ShowBitmap Function (VO)
StretchBitmap Function (VO)
SysObject Function (VO)
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PtrLen Function

X#
Determine the number of bytes that can be read at a given pointer.

Namespace:  XSharp.VO
Assembly:  XSharp.VO (in XSharp.VO.dll) Version: 2.21
Syntax
Copy
 FUNCTION PtrLen(
	lpv AS IntPtr
) AS DWORD
Request Example View Source

Parameters

lpv
Type: IntPtr

Return Value

Type: DWord
The number of bytes that can be read, starting from the location pointed to by ptrRead.
If ptrRead is an invalid pointer, a value of 0 is returned.
Remarks
Examples
This example illustrates PtrLen():
X#
Copy
1LOCAL ptrFunc AS PTR
2ptrFunc := @ MyFunc()
3? PtrLen(ptrFunc)
See Also