From 6d04ef2caa1d78ffb388b5ef13f7df0ebbaf9f39 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Mon, 26 Aug 2024 09:22:04 +0200
Subject: Fix Fl_GDI_Graphics_Driver::rect_unscaled() (#1052)

---
 src/drivers/GDI/Fl_GDI_Graphics_Driver_rect.cxx | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'src/drivers/GDI')

diff --git a/src/drivers/GDI/Fl_GDI_Graphics_Driver_rect.cxx b/src/drivers/GDI/Fl_GDI_Graphics_Driver_rect.cxx
index 4527ee920..1e70b7929 100644
--- a/src/drivers/GDI/Fl_GDI_Graphics_Driver_rect.cxx
+++ b/src/drivers/GDI/Fl_GDI_Graphics_Driver_rect.cxx
@@ -62,11 +62,22 @@ void Fl_GDI_Graphics_Driver::focus_rect(int x, int y, int w, int h) {
 }
 
 void Fl_GDI_Graphics_Driver::rect_unscaled(int x, int y, int w, int h) {
-  MoveToEx(fl_gc, x, y, 0L);
-  LineTo(fl_gc, x+w, y);
-  LineTo(fl_gc, x+w, y+h);
-  LineTo(fl_gc, x, y+h);
-  LineTo(fl_gc, x, y);
+  HPEN oldpen, newpen;
+  if (line_width_ > 1) {
+    LOGBRUSH penbrush = {BS_SOLID, fl_RGB(), 0};
+    newpen = ExtCreatePen(PS_GEOMETRIC | PS_ENDCAP_SQUARE, line_width_, &penbrush, 0, 0);
+    oldpen = (HPEN)SelectObject(gc_, newpen);
+  }
+  MoveToEx(gc_, x, y, 0L);
+  LineTo(gc_, x+w, y);
+  if (line_width_ <= 1) LineTo(gc_, x+w, y+h+1); // see issue #1052
+  LineTo(gc_, x+w, y+h);
+  LineTo(gc_, x, y+h);
+  LineTo(gc_, x, y);
+  if (line_width_ > 1) {
+    SelectObject(gc_, oldpen);
+    DeleteObject(newpen);
+  }
 }
 
 void Fl_GDI_Graphics_Driver::rectf_unscaled(int x, int y, int w, int h) {
-- 
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