Support showing announcements, as suggested by Q.

library/include/modules/Gui.h

@@ -48,24 +48,43 @@ namespace DFHack
 {
     class Core;
 
+    // Full-screen item details view
     DFHACK_EXPORT bool item_details_hotkey(Core *, df::viewscreen *top);
+    // 'u'nits or 'j'obs full-screen view
     DFHACK_EXPORT bool unitjobs_hotkey(Core *, df::viewscreen *top);
 
+    // A job is selected in a workshop
     DFHACK_EXPORT bool workshop_job_hotkey(Core *c, df::viewscreen *top);
+    // Building material selection mode
     DFHACK_EXPORT bool build_selector_hotkey(Core *c, df::viewscreen *top);
+    // A unit is selected in the 'v' mode
     DFHACK_EXPORT bool view_unit_hotkey(Core *c, df::viewscreen *top);
+    // Above + the inventory page is selected.
     DFHACK_EXPORT bool unit_inventory_hotkey(Core *c, df::viewscreen *top);
 
-    DFHACK_EXPORT bool any_job_hotkey(Core *c, df::viewscreen *top);
-    DFHACK_EXPORT bool any_unit_hotkey(Core *c, df::viewscreen *top);
-    DFHACK_EXPORT bool any_item_hotkey(Core *c, df::viewscreen *top);
-
+    // In workshop_job_hotkey, returns the job
     DFHACK_EXPORT df::job *getSelectedWorkshopJob(Core *c, bool quiet = false);
 
+    // A job is selected in a workshop, or unitjobs
+    DFHACK_EXPORT bool any_job_hotkey(Core *c, df::viewscreen *top);
     DFHACK_EXPORT df::job *getSelectedJob(Core *c, bool quiet = false);
+
+    // A unit is selected via 'v', 'k', unitjobs, or
+    // a full-screen item view of a cage or suchlike
+    DFHACK_EXPORT bool any_unit_hotkey(Core *c, df::viewscreen *top);
     DFHACK_EXPORT df::unit *getSelectedUnit(Core *c, bool quiet = false);
+
+    // An item is selected via 'v'->inventory, 'k', 't', or
+    // a full-screen item view of a container. Note that in the
+    // last case, the highlighted contained item is returned, not
+    // the container itself.
+    DFHACK_EXPORT bool any_item_hotkey(Core *c, df::viewscreen *top);
     DFHACK_EXPORT df::item *getSelectedItem(Core *c, bool quiet = false);
 
+    // Show a plain announcement, or a titan-style popup message
+    DFHACK_EXPORT void showAnnouncement(std::string message, int color = 7, bool bright = true);
+    DFHACK_EXPORT void showPopupAnnouncement(std::string message, int color = 7, bool bright = true);
+
     class DFContextShared;
     /**
      * A GUI screen

library/modules/Gui.cpp

@@ -57,6 +57,8 @@ using namespace DFHack;
 #include "df/building_furnacest.h"
 #include "df/general_ref.h"
 #include "df/unit_inventory_item.h"
+#include "df/report.h"
+#include "df/popup_message.h"
 
 using namespace df::enums;
 
@@ -380,6 +382,70 @@ df::item *DFHack::getSelectedItem(Core *c, bool quiet)
 
 //
 
+void DFHack::showAnnouncement(std::string message, int color, bool bright)
+{
+    using df::global::world;
+    using df::global::cur_year;
+    using df::global::cur_year_tick;
+
+    int year = 0, year_time = 0;
+
+    if (cur_year && cur_year_tick)
+    {
+        year = *cur_year;
+        year_time = *cur_year_tick;
+    }
+    else if (!world->status.reports.empty())
+    {
+        // Fallback: copy from the last report
+        df::report *last = world->status.reports.back();
+        year = last->year;
+        year_time = last->time;
+    }
+
+    bool continued = false;
+
+    while (!message.empty())
+    {
+        df::report *new_rep = new df::report();
+
+        new_rep->color = color;
+        new_rep->bright = bright;
+        new_rep->year = year;
+        new_rep->time = year_time;
+
+        new_rep->flags.bits.continuation = continued;
+        new_rep->flags.bits.announcement = true;
+
+        int size = std::min(message.size(), 73U);
+        new_rep->text = message.substr(0, size);
+        message = message.substr(size);
+
+        continued = true;
+
+        // Add the object to the lists
+        new_rep->id = world->status.next_report_id++;
+
+        world->status.reports.push_back(new_rep);
+        world->status.announcements.push_back(new_rep);
+        world->status.display_timer = 2000;
+    }
+
+}
+
+void DFHack::showPopupAnnouncement(std::string message, int color, bool bright)
+{
+    using df::global::world;
+
+    df::popup_message *popup = new df::popup_message();
+    popup->text = message;
+    popup->color = color;
+    popup->bright = bright;
+    world->status.popups.push_back(popup);
+}
+
+//
+
 Module* DFHack::createGui()
 {
     return new Gui();

library/xml

@@ -1 +1 @@
-Subproject commit f9c6d105af74cd4e307f513a7df674e685dc9ff0
+Subproject commit 30ce6e3d537ccc51e232c129680d53d5d58180fc