Initialize scrollbar positions in wxGTK correctly.

The scrollbar positions stored in wxWindow::m_scrollPos were not initially
correct in wxGTK because wxScrollHelper::SetScrollbars() didn't update them
and only set the values of the underlying GtkAdjustments themselves. This
resulted in filtering out of the first scroll event as the code (wrongly)
believed that the scrollbar position hadn't changed.

Fix this by setting m_scrollPos to the real scrollbar positions.

Closes #12468.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66142 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/gtk/scrolwin.cpp b/src/gtk/scrolwin.cpp
index b13658fd237b0cb00584b6de89eba0c163b2a9ff..dcdc24f8afdabad908652e38a655567f0ec00ae5 100644 (file)
--- a/src/gtk/scrolwin.cpp
+++ b/src/gtk/scrolwin.cpp
@@ -30,7 +30,9 @@ void wxScrollHelper::SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
                                    int xPos, int yPos,
                                    bool noRefresh)
 {
+    m_win->m_scrollPos[wxWindow::ScrollDir_Horz] =
     m_win->m_scrollBar[wxWindow::ScrollDir_Horz]->adjustment->value = xPos;
+    m_win->m_scrollPos[wxWindow::ScrollDir_Vert] =
     m_win->m_scrollBar[wxWindow::ScrollDir_Vert]->adjustment->value = yPos;
     base_type::SetScrollbars(
         pixelsPerUnitX, pixelsPerUnitY, noUnitsX, noUnitsY, xPos, yPos, noRefresh);