diff --git a/src/dlangui/graphics/gldrawbuf.d b/src/dlangui/graphics/gldrawbuf.d
index 2cca3ed5..73c28fa6 100644
--- a/src/dlangui/graphics/gldrawbuf.d
+++ b/src/dlangui/graphics/gldrawbuf.d
@@ -46,10 +46,8 @@ class GLDrawBuf : DrawBuf, GLConfigCallback {
     @property Scene scene() { return _scene; }
 
     this(int dx, int dy, bool framebuffer = false) {
-        _dx = dx;
-        _dy = dy;
+        resize(dx, dy);
         _framebuffer = framebuffer;
-        resetClipping();
     }
 
     /// returns current width
@@ -65,7 +63,6 @@ class GLDrawBuf : DrawBuf, GLConfigCallback {
 
     /// reserved for hardware-accelerated drawing - begins drawing batch
     override void beforeDrawing() {
-        resetClipping();
         _alpha = 0;
         if (_scene !is null) {
             _scene.reset();
diff --git a/src/dlangui/platforms/sdl/sdlapp.d b/src/dlangui/platforms/sdl/sdlapp.d
index 421a4375..a16e07db 100644
--- a/src/dlangui/platforms/sdl/sdlapp.d
+++ b/src/dlangui/platforms/sdl/sdlapp.d
@@ -422,12 +422,13 @@ class SDLWindow : Window {
                 float b = ((_backgroundColor >> 0) & 255) / 255.0f;
                 glClearColor(r, g, b, a);
                 glClear(GL_COLOR_BUFFER_BIT);
-                GLDrawBuf buf = new GLDrawBuf(_dx, _dy, false);
-                buf.beforeDrawing();
-                onDraw(buf);
-                buf.afterDrawing();
+                if (!_drawbuf)
+                    _drawbuf = new GLDrawBuf(_dx, _dy);
+                _drawbuf.resize(_dx, _dy);
+                _drawbuf.beforeDrawing();
+                onDraw(_drawbuf);
+                _drawbuf.afterDrawing();
                 SDL_GL_SwapWindow(_win);
-                destroy(buf);
             }
         } else {
             // Select the color for drawing.
@@ -441,10 +442,9 @@ class SDLWindow : Window {
             if (!_drawbuf)
                 _drawbuf = new ColorDrawBuf(_dx, _dy);
             _drawbuf.resize(_dx, _dy);
-            _drawbuf.resetClipping();
             _drawbuf.fill(_backgroundColor);
             onDraw(_drawbuf);
-            draw(_drawbuf);
+            draw(cast(ColorDrawBuf)_drawbuf);
 
             // Up until now everything was drawn behind the scenes.
             // This will show the new, red contents of the window.
@@ -452,7 +452,7 @@ class SDLWindow : Window {
         }
     }
 
-    ColorDrawBuf _drawbuf;
+    DrawBuf _drawbuf;
 
     //bool _exposeSent;
     void processExpose() {
diff --git a/src/dlangui/widgets/editors.d b/src/dlangui/widgets/editors.d
index 5feedda1..843b345e 100644
--- a/src/dlangui/widgets/editors.d
+++ b/src/dlangui/widgets/editors.d
@@ -960,12 +960,10 @@ class EditWidgetBase : ScrollWidgetBase, EditableContentListener, MenuItemAction
             // draw caret
             Rect caretRc = caretRect();
             if (caretRc.intersects(_clientRect)) {
-                Rect rc1 = caretRc;
-                rc1.right = rc1.left + 1;
                 caretRc.left++;
                 if (_replaceMode)
                     buf.fillRect(caretRc, _caretColorReplace);
-                buf.fillRect(rc1, _caretColor);
+                buf.drawLine(Point(caretRc.left, caretRc.bottom), Point(caretRc.left, caretRc.top), _caretColor);
             }
         }
     }
diff --git a/src/dlangui/widgets/grid.d b/src/dlangui/widgets/grid.d
index 565f0f54..33f74677 100644
--- a/src/dlangui/widgets/grid.d
+++ b/src/dlangui/widgets/grid.d
@@ -1407,11 +1407,6 @@ class StringGridWidget : StringGridWidgetBase {
 
     /// draw cell background
     protected override void drawHeaderCellBackground(DrawBuf buf, Rect rc, int c, int r) {
-        Rect vborder = rc;
-        Rect hborder = rc;
-        vborder.left = vborder.right - 1;
-        hborder.top = hborder.bottom - 1;
-        hborder.right--;
         bool selectedCol = (c == col) && !_rowSelect;
         bool selectedRow = r == row;
         bool selectedCell = selectedCol && selectedRow;
@@ -1426,8 +1421,30 @@ class StringGridWidget : StringGridWidgetBase {
                 cl = _cellHeaderSelectedBackgroundColor;
         }
         buf.fillRect(rc, cl);
-        buf.fillRect(vborder, _cellHeaderBorderColor);
-        buf.fillRect(hborder, _cellHeaderBorderColor);
+        buf.drawLine(Point(rc.right, rc.bottom), Point(rc.right, rc.top), _cellHeaderBorderColor); // vertical
+        buf.drawLine(Point(rc.left, rc.bottom), Point(rc.right - 1, rc.bottom), _cellHeaderBorderColor); // horizontal
+    }
+
+    /// draw cell background
+    protected override void drawCellBackground(DrawBuf buf, Rect rc, int c, int r) {
+        bool selectedCol = c == col;
+        bool selectedRow = r == row;
+        bool selectedCell = selectedCol && selectedRow;
+        if (_rowSelect && selectedRow)
+            selectedCell = true;
+        // normal cell background
+        if (c < fixedCols || r < fixedRows) {
+            // fixed cell background
+            buf.fillRect(rc, _fixedCellBackgroundColor);
+        }
+        buf.drawLine(Point(rc.left, rc.bottom + 1), Point(rc.left, rc.top), _cellBorderColor); // vertical
+        buf.drawLine(Point(rc.left, rc.bottom), Point(rc.right - 1, rc.bottom), _cellBorderColor); // horizontal
+        if (selectedCell) {
+            if (_rowSelect)
+                buf.drawFrame(rc, _selectionColorRowSelect, Rect(0,1,0,1), _cellBorderColor);
+            else
+                buf.drawFrame(rc, _selectionColor, Rect(1,1,1,1), _cellBorderColor);
+        }
     }
 
 
@@ -1442,34 +1459,6 @@ class StringGridWidget : StringGridWidgetBase {
         _cellHeaderSelectedBackgroundColor = style.customColor("grid_cell_background_header_selected", 0x80FFC040);
         super.onThemeChanged();
     }
-
-    /// draw cell background
-    protected override void drawCellBackground(DrawBuf buf, Rect rc, int c, int r) {
-        Rect vborder = rc;
-        Rect hborder = rc;
-        vborder.left = vborder.right - 1;
-        hborder.top = hborder.bottom - 1;
-        hborder.right--;
-        bool selectedCol = c == col;
-        bool selectedRow = r == row;
-        bool selectedCell = selectedCol && selectedRow;
-        if (_rowSelect && selectedRow)
-            selectedCell = true;
-        // normal cell background
-        if (c < fixedCols || r < fixedRows) {
-            // fixed cell background
-            buf.fillRect(rc, _fixedCellBackgroundColor);
-        }
-        buf.fillRect(vborder, _cellBorderColor);
-        buf.fillRect(hborder, _cellBorderColor);
-        if (selectedCell) {
-            if (_rowSelect)
-                buf.drawFrame(rc, _selectionColorRowSelect, Rect(0,1,0,1), _cellBorderColor);
-            else
-                buf.drawFrame(rc, _selectionColor, Rect(1,1,1,1), _cellBorderColor);
-        }
-    }
-
 }
 
 import dlangui.widgets.metadata;