FWrite3 Function | |
Write the contents of a buffer to an open file.
Namespace:
XSharp.Core
Assembly:
XSharp.Core (in XSharp.Core.dll) Version: 2.21
Syntax FUNCTION FWrite3(
ptrHandle AS IntPtr,
ptrBuffer AS BYTE[],
dwBytes AS DWORD
) AS DWORD
public static uint FWrite3(
IntPtr ptrHandle,
byte[] ptrBuffer,
uint dwBytes
)
Request Example
View SourceParameters
- ptrHandle
- Type: IntPtr
The handle of the file to write to. - ptrBuffer
- Type: Byte
A pointer to the buffer to write. - dwBytes
- Type: DWord
The number of bytes in ptrBuffer to write, beginning at the current file pointer position.
Return Value
Type:
DWord
The number of bytes written.
If the value returned is equal to
dwBytes, the operation was successful.
If the return value is less than
dwBytes or 0, this means that the length of
ptrBuffer is less than
dwBytes, or the disk is full, or another error has occurred. FError() can be used to determine the specific error.
Remarks
FWrite3() is a strongly-typed version of FWrite(). Moreover, the second argument in FWrite3() is a pointer to a buffer, instead of a string. See FWrite() for details.
Remarks Tip |
---|
Conversions between OEM en Ansi were relevant in an Ansi environment like Visual Objects.
In a Unicode environment this conversion is noto much a conversion between OEM and Ansi but a
conversion between either Unicode and Ansi or Unicode and OEM.
For these conversions the runtime uses the current values of the
Windows Codepage
and
DOS Codepage.
|
Examples
This example writes the contents of a PSZ to a file:.
1LOCAL pszBuff AS PSZ
2LOCAL ptrHandle AS PTR
3pszBuff := "hello"
4ptrHandle := FOpen2("temp.bin", FO_READWRITE)
5IF ptrHandle != F_ERROR
6 FWrite3(ptrHandle, pszBuff, PszLen(pszBuff)
7ENDIF
See Also