通过

IDebugDocumentPosition2::GetRange

  • 项目

Applies to: yesVisual Studio noVisual Studio for Mac

Note

This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here

Gets the range for this document position.

Syntax

HRESULT GetRange( 
   TEXT_POSITION* pBegPosition,
   TEXT_POSITION* pEndPosition
);

int GetRange( 
   TEXT_POSITION[] pBegPosition,
   TEXT_POSITION[] pEndPosition
);

Parameters

pBegPosition
[in, out] A TEXT_POSITION structure that is filled in with the starting position. Set this argument to a null value if this information is not needed.

pEndPosition
[in, out] A TEXT_POSITION structure that is filled in with the ending position. Set this argument to a null value if this information is not needed.

Return Value

If successful, returns S_OK; otherwise, returns an error code.

Remarks

The range specified in a document position for a location breakpoint is used by the debug engine (DE) to search ahead for a statement that actually contributes code. For example, consider the following code:

Line 5: // comment
Line 6: x = 1;

Line 5 contributes no code to the program being debugged. If the debugger that sets the breakpoint on line 5 wants the DE to search forward a certain amount for the first line that contributes code, the debugger would specify a range that includes additional candidate lines where a breakpoint might be properly placed. The DE would then search forward through those lines until it found a line that could accept a breakpoint.

See also