commit - 8964e49031e0a23aaa0d9d2155a62bba92b5d587
commit + 70c441f34ae6efd331b58999cf2e384fda46b795
blob - ccd50669b42d5dede1f47fd5c71ba7d1e2d0841c
blob + b6bba5be8e4d8dab5b465b9d95bc5b6ec73983e9
--- aui.h
+++ aui.h
@@ -50,8 +50,26 @@ struct aui_gridpar {
 	unsigned int row;
 	unsigned int columnspan;
 	unsigned int rowspan;
+	unsigned int ipadx; /* Internal padding X */
+	unsigned int ipady; /* Internal padding Y */
+	unsigned int padx;
+	unsigned int pady;
 };
 
+struct aui_rowpar {
+	unsigned int minsize;
+	unsigned char weight; /*  Minimum is 1 */
+	unsigned char uniform;
+	unsigned int pad;
+};
+
+struct aui_columnpar {
+	unsigned int minsize;
+	unsigned char weight; /*  Minimum is 1 */
+	unsigned char uniform;
+	unsigned int pad;
+};
+
 struct aui_widget;
 struct aui_window;
 struct aui_frame;
@@ -104,6 +122,12 @@ int aui_getplacepar(struct aui_widget *, struct aui_pl
 int aui_getgridpar(struct aui_widget *, struct aui_gridpar *);
 int aui_getpackpar(struct aui_widget *, struct aui_packpar *);
 
+/*
+ * Grid container operations
+ */
+int aui_rowconfigure(struct aui_widget *, struct aui_rowpar *);
+int aui_columnconfigure(struct aui_widget *, struct aui_columnpar *);
+
 #define AUI_CANVAS_RECTANGLE		0
 #define AUI_CANVAS_ARC				1
 #define AUI_CANVAS_IMAGE			2
blob - 1b3320cb09ed30ffbbde8bfc71b9fe9ba82c5989
blob + 27247026aac62a520238719eea0fa73522bf1522
--- aui_run.3
+++ aui_run.3
@@ -1,4 +1,4 @@
-.Dd $Mdocdate: July 08 2026$
+.Dd $Mdocdate: July 14 2026$
 .Dt AUI_RUN 3
 .Os
 .Sh NAME
@@ -84,7 +84,7 @@ container like frame. Here is an example.
 .Pp
 .Bd -literal -offset indent
 struct aui_frame *frame = aui_frame_new(AUI_WIDGET(aw), NULL);
-struct aui_button *btn = aui_button_new(AUI_WIDGET(frame));
+struct aui_button *btn = aui_button_new(AUI_WIDGET(frame), NULL);
 .Ed
 .Pp
 Adding widgets to containers does not make them directly visible. You must
blob - 3dffb8bcb5cb44e27c408169d974618992e39e19
blob + 04f9802db7f7f7fdae95cbd69298af6a4af608b4
--- layout.c
+++ layout.c
@@ -27,8 +27,28 @@ static struct aui_packpar default_pack = {
 static struct aui_gridpar default_grid = {
 	.column = 0,
 	.row = 0,
+	.columnspan = 1,
+	.rowspan = 1,
+	.ipadx = 0,
+	.ipady = 0,
+	.padx = 0,
+	.pady = 0
 };
 
+static struct aui_rowpar default_rowconfigure = {
+	.minsize = 0,
+	.weight = 1,
+	.uniform = 0,
+	.pad = 0,
+};
+
+static struct aui_rowpar default_columnconfigure = {
+	.minsize = 0,
+	.weight = 1,
+	.uniform = 0,
+	.pad = 0,
+};
+
 static int
 can_add(struct aui_widget *widget, enum aui_layout_type type)
 {
@@ -134,6 +154,9 @@ grid(struct aui_widget *widget)
 	unsigned int *rsize = con->row_sizes;
 	unsigned int *csize = con->col_sizes;
 
+	memset(con->row_maps, 0, sizeof(*con->row_maps) * con->grid_size[1]);
+	memset(con->col_maps, 0, sizeof(*con->col_maps) * con->grid_size[0]);
+
 	memset(con->row_sizes, 0, sizeof(*con->row_sizes) * con->grid_size[1]);
 	memset(con->col_sizes, 0, sizeof(*con->col_sizes) * con->grid_size[0]);
 
@@ -175,14 +198,31 @@ grid(struct aui_widget *widget)
 
 		struct aui_geometry min = child->ops->get_min_size(child);
 		struct aui_geometry geom = { 0 };
+		struct aui_gridpar *gpar = &child->gridpar;
 
+		int cspan = (gpar->column + gpar->columnspan) <= con->grid_size[0] ?
+					gpar->columnspan - 1: con->grid_size[0] - gpar->column - 1;
+
+		int rspan = (gpar->row + gpar->rowspan) <= con->grid_size[1] ?
+					gpar->rowspan - 1: con->grid_size[1] - gpar->row - 1;
+
+
 		int dx = (csize[child->gridpar.column] - min.width);
 		int dy = (rsize[child->gridpar.row] - min.height);
 
+		int width = min.width;
+		int height = min.height;
+
+		for (int i = gpar->column; i < gpar->column + cspan; i++)
+			width += csize[i];
+
+		for (int i = gpar->row; i < gpar->row + rspan; i++)
+			height += rsize[i];
+
 		geom.x = widget->geom.x + cpos[child->gridpar.column] + dx / 2;
 		geom.y = widget->geom.y + rpos[child->gridpar.row] + dy / 2;
-		geom.width = min.width;
-		geom.height = min.height;
+		geom.width = width;
+		geom.height = height;
 
 		child->ops->set_geometry(child, &geom);
 	}
blob - 7a83c3dbf2d1c03d32bd4dd5371081607aaee0b2
blob + ff0077c16e3465ac05c6d6ec98065e4f0a6f14ba
--- widget.h
+++ widget.h
@@ -73,6 +73,8 @@ struct aui_container {
 	unsigned int *col_sizes;
 	unsigned int *row_pos;
 	unsigned int *col_pos;
+	struct aui_rowpar *rowconfigure;
+	struct aui_columnpar *columnconfigure;
 
 	struct container_focus {
 		struct aui_widget *press;