[3/6] gdiplus: GdipIsMatrixEqual

[Nikolay Sivov]

Changelog:
    - implemented GdipIsMatrixEqual

---
 dlls/gdiplus/gdiplus.spec |    2 +-
 dlls/gdiplus/matrix.c     |   11 +++++++++++
 include/gdiplusflat.h     |    4 ++--
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/dlls/gdiplus/gdiplus.spec b/dlls/gdiplus/gdiplus.spec
index c5dfa5c..0365ca3 100644
--- a/dlls/gdiplus/gdiplus.spec
+++ b/dlls/gdiplus/gdiplus.spec
@@ -418,7 +418,7 @@
 @ stub GdipIsEmptyRegion
 @ stub GdipIsEqualRegion
 @ stub GdipIsInfiniteRegion
-@ stub GdipIsMatrixEqual
+@ stdcall GdipIsMatrixEqual(ptr ptr ptr)
 @ stub GdipIsMatrixIdentity
 @ stub GdipIsMatrixInvertible
 @ stub GdipIsOutlineVisiblePathPoint
diff --git a/dlls/gdiplus/matrix.c b/dlls/gdiplus/matrix.c
index e04e2cd..cc3507e 100644
--- a/dlls/gdiplus/matrix.c
+++ b/dlls/gdiplus/matrix.c
@@ -355,3 +355,14 @@ GpStatus WINGDIPAPI GdipVectorTransformMatrixPointsI(GpMatrix *matrix, GpPoint *
 
     return ret;
 }
+
+GpStatus WINGDIPAPI GdipIsMatrixEqual(GDIPCONST GpMatrix *matrix, GDIPCONST GpMatrix *matrix2,
+    BOOL *result)
+{
+    if(!matrix || !matrix2 || !result)
+        return InvalidParameter;
+    /* based on single array member of GpMatrix */
+    *result = (memcmp(matrix->matrix, matrix2->matrix, sizeof(GpMatrix)) == 0);
+
+    return Ok;
+}
diff --git a/include/gdiplusflat.h b/include/gdiplusflat.h
index 241948b..45dd47b 100644
--- a/include/gdiplusflat.h
+++ b/include/gdiplusflat.h
@@ -235,9 +235,9 @@ GpStatus WINGDIPAPI GdipTransformPath(GpPath*,GpMatrix*);
 GpStatus WINGDIPAPI GdipCloneMatrix(GpMatrix*,GpMatrix**);
 GpStatus WINGDIPAPI GdipCreateMatrix(GpMatrix**);
 GpStatus WINGDIPAPI GdipCreateMatrix2(REAL,REAL,REAL,REAL,REAL,REAL,GpMatrix**);
-GpStatus WINGDIPAPI GdipCreateMatrix3(GDIPCONST GpRectF *,GDIPCONST GpPointF*,
-    GpMatrix**);
+GpStatus WINGDIPAPI GdipCreateMatrix3(GDIPCONST GpRectF *,GDIPCONST GpPointF*,GpMatrix**);
 GpStatus WINGDIPAPI GdipCreateMatrix3I(GDIPCONST GpRect*,GDIPCONST GpPoint*,GpMatrix**);
+GpStatus WINGDIPAPI GdipIsMatrixEqual(GDIPCONST GpMatrix*, GDIPCONST GpMatrix*, BOOL*);
 
 GpStatus WINGDIPAPI GdipDeleteMatrix(GpMatrix*);
 GpStatus WINGDIPAPI GdipGetMatrixElements(GDIPCONST GpMatrix*,REAL*);
-- 
1.4.4.4