X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgrid.cpp;h=3b44ac857e0058e9e6d34de38ffd158aced3e17e;hb=HEAD;hp=6296098f511017c339058050a4a73eaba2c81de9;hpb=b30edd979e6e9c7acfaaf3a90903814a7e62a71e;p=libs%2Fgltk.git

diff --git a/source/grid.cpp b/source/grid.cpp
index 6296098..eb32cc9 100644
--- a/source/grid.cpp
+++ b/source/grid.cpp
@@ -3,11 +3,9 @@
 namespace Msp {
 namespace GLtk {
 
-Grid::Grid(Layout &l, unsigned c):
+Grid::Grid(Layout &l, size_t c):
 	Arrangement(l),
-	columns(c),
-	first_row(true),
-	column(0)
+	columns(c)
 { }
 
 void Grid::skip()
@@ -17,6 +15,9 @@ void Grid::skip()
 
 void Grid::next_row()
 {
+	if(row_bottom.empty())
+		throw arrangement_error("empty row not allowed");
+
 	finish_row();
 }