diff options
| -rw-r--r-- | src/town_gui.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/town_gui.cpp b/src/town_gui.cpp index c2a8909a6..76b89e2cc 100644 --- a/src/town_gui.cpp +++ b/src/town_gui.cpp @@ -73,6 +73,7 @@ private: Town *town; ///< Town being displayed. int sel_index; ///< Currently selected town action, \c 0 to \c TACT_COUNT-1, \c -1 means no action selected. Scrollbar *vscroll; + uint displayed_actions_on_previous_painting; ///< Actions that were available on the previous call to OnPaint() /** * Get the position of the Nth set bit. @@ -96,7 +97,7 @@ private: } public: - TownAuthorityWindow(const WindowDesc *desc, WindowNumber window_number) : Window(), sel_index(-1) + TownAuthorityWindow(const WindowDesc *desc, WindowNumber window_number) : Window(), sel_index(-1), displayed_actions_on_previous_painting(0) { this->town = Town::Get(window_number); this->InitNested(desc, window_number); @@ -108,6 +109,8 @@ public: { int numact; uint buttons = GetMaskOfTownActions(&numact, _local_company, this->town); + if (buttons != displayed_actions_on_previous_painting) this->SetDirty(); + displayed_actions_on_previous_painting = buttons; this->vscroll->SetCount(numact + 1); |