// Transform |page_object| by the given matrix.
//
// page_object - handle to a page object.
// a - matrix value.
// b - matrix value.
// c - matrix value.
// d - matrix value.
// e - matrix value.
// f - matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and can be used to scale, rotate, shear and translate the |page_object|.
DLLEXPORT void STDCALL FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
double a,
double b,
double c,
double d,
double e,
double f);