richedit: EM_SHOWSCROLLBAR hides scrollbars for less than page of text.

When all the text fits on the screen, the scrollbars are not shown from EM_SHOWSCROLLBAR. The message instead adds support for the specified scrollbar when lParam is TRUE, so that the scrollbar will be shown when sufficient text is in the document.

richedit: EM_SHOWSCROLLBAR hides scrollbars for less than page of text.
963407a9 · Dylan Smith · Alexandre Julliard · f2898868 · 963407a9
Commit 963407a9 authored Feb 24, 2009 by Dylan Smith Committed by Alexandre Julliard Feb 24, 2009
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Showing with 11 additions and 5 deletions

editor.c dlls/riched20/editor.c +11 -5

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--- a/dlls/riched20/editor.c
+++ b/dlls/riched20/editor.c
@@ -3156,12 +3156,18 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
        return 0;
    }

-    if (lParam)
+    if (lParam) {
      editor->styleFlags |= flags;
-    else
-      editor->styleFlags &= flags;
-
-    ITextHost_TxShowScrollBar(editor->texthost, wParam, lParam);
+      if (flags & WS_HSCROLL)
+        ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
+                          editor->nTotalWidth > editor->sizeWindow.cx);
+      if (flags & WS_VSCROLL)
+        ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
+                          editor->nTotalLength > editor->sizeWindow.cy);
+    } else {
+      editor->styleFlags &= ~flags;
+      ITextHost_TxShowScrollBar(editor->texthost, wParam, FALSE);
+    }
    return 0;
  }
  case EM_SETTEXTEX: