共用方式為

Invalidate method

  • 發行項

Indicates the invalid display rectangle that must be redrawn.

Syntax

HRESULT retVal = object.Invalidate(pRect);

Parameters

  • pRect [in]
    Type: RECT

    A pointer to a RECT that encloses the invalid region.

Return value

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.