galaxy-ui-and-dialogs

name

galaxy-ui-and-dialogs

description

Dialog and dialog control creation, XML frame hookup, hero/upgrade selection panels, scoreboard panels, dialog events, HUD messages, localized text, minimap pings, and the SSF hooked-frame UI pattern in Galaxy script. Use when building or updating any in-game UI such as dialogs, buttons, labels, images, portraits, click handlers, or player-visible messages. Do not use for actor-based visuals (use galaxy-actor-and-visuals).

Galaxy Scripting – UI & Dialogs

Key References

Resource	URL
Native function reference	https://mapster.talv.space/galaxy/reference
Galaxy syntax definition	https://github.com/Talv/vscode-sc2-galaxy/blob/master/syntaxes/galaxy.json
SC2-IngameDevTools (PRIMARY — #1 codebase)	https://github.com/abrahamYG/SC2-IngameDevTools/tree/main/DevToolsIngame.SC2Mod/Script
SSF codebase (secondary style)	https://github.com/Cristall/SC2-SwarmSpecialForces/tree/main/SwarmSpecialForces.SC2Map/scripts
Alcyone Frontlines codebase	https://github.com/KimPlaybit/Alcyone_Frontlines/tree/master/ProximaFrontlines.SC2Mod/scripts
NativeLib dialog helpers	TriggerLibs/NativeLib.galaxy — all libNtve_gf_CreateDialogItem*, libNtve_gf_SetDialogItem* functions
Dialogs guide	https://s2editor-guides.readthedocs.io/New_Tutorials/03_Trigger_Editor/043_Dialogs/
Dialog Panels guide	https://s2editor-guides.readthedocs.io/New_Tutorials/03_Trigger_Editor/044_Dialog_Panels/
UI Events guide	https://s2editor-guides.readthedocs.io/New_Tutorials/03_Trigger_Editor/049_UI_Events/
SC2Mapster wiki	https://sc2mapster.wiki.gg/

---

Dialogs

Dialogs are overlay panels created either programmatically or hooked up to existing UI frames defined in layout XML.

Hooking up an existing XML frame (SSF pattern — preferred)

SSF binds to frames already defined in the SC2 UI XML layout:

// Hook a panel frame by path from the root UI hierarchy
dialogcontrol gv_UI_MasterFrame = DialogControlHookupStandard(
    c_triggerControlTypePanel,
    "UIContainer/FullscreenUpperContainer/SSF_CustomUI"
);

// Hook a specific child control (button, label, etc.) within a parent frame
dialogcontrol saveBtn = DialogControlHookup(
    gv_UI_MasterFrame,
    c_triggerControlTypeButton,
    "Menu/SaveButton"
);

// Register click event on the hooked control
TriggerAddEventDialogControl(
    TriggerCreate("Bank_ManualSave"),
    c_playerAny,
    saveBtn,
    c_triggerControlEventTypeClick
);

The init pattern in UI-Main.galaxy:

void SSFCustomUI_Init() {
    gv_UI_MasterFrame = DialogControlHookupStandard(c_triggerControlTypePanel, "UIContainer/FullscreenUpperContainer/SSF_CustomUI");
    StatsInterface_Init();   // each UI subsystem hooks its own controls
    HeroPanel_Init();
    PlayerBoard_Init();
    // ...
}

Creating a dialog programmatically (alternate)

dialog lv_dlg = DialogCreate(
    1200,              // width  (pixels)
    600,               // height (pixels)
    c_anchorCenter,    // anchor position on screen
    0,                 // x offset from anchor
    0,                 // y offset from anchor
    false              // modal (blocks input to game underneath)
);
// Or capture:
gv_heroDialog = DialogLastCreated();

Showing / hiding

DialogSetVisible(lv_dlg, PlayerGroupAll(), true);   // show to all
DialogSetVisible(lv_dlg, PlayerGroupSingle(3), false); // hide for player 3

Anchor constants

c_anchorTopLeft
c_anchorTop
c_anchorTopRight
c_anchorLeft
c_anchorCenter
c_anchorRight
c_anchorBottomLeft
c_anchorBottom
c_anchorBottomRight

---

Dialog Controls

⭐ SC2-IngameDevTools DialogControlHookup pattern (PRIMARY — use for existing XML frames)

The SC2-IngameDevTools codebase hooks into pre-existing XML UI frames rather than creating dialog controls in code. This is the preferred pattern when UI frames are defined in Base.SC2Data/UI/Layout/:

// Hookup an existing XML panel by its frame path (no creation needed)
// The path is relative to the UI layout root
static const string CONTAINERDLG_PATH =
    "UIContainer/ConsoleUIContainer/CatalogManager/BehaviorManager";
static const string EDITBOX_PATH    = "Item";
static const string ADDBTN_PATH     = "AddButton";
static const string REMOVEBTN_PATH  = "RemoveButton";

struct BehaviorContainerStruct {
    int panel;       // the hooked panel (int = dialog control handle)
    int messageBox;
    int addButton;
    int removeButton;
};
BehaviorContainerStruct BehaviorContainer;

void BehaviorHandler_Init() {
    trigger t;
    // Hook the root panel by absolute path
    BehaviorContainer.panel =
        DialogControlHookupStandard(c_triggerControlTypePanel, CONTAINERDLG_PATH);

    // Hook child controls relative to the panel
    BehaviorContainer.messageBox =
        DialogControlHookup(BehaviorContainer.panel, c_triggerControlTypeEditBox, EDITBOX_PATH);
    BehaviorContainer.addButton =
        DialogControlHookup(BehaviorContainer.panel, c_triggerControlTypeButton, ADDBTN_PATH);
    BehaviorContainer.removeButton =
        DialogControlHookup(BehaviorContainer.panel, c_triggerControlTypeButton, REMOVEBTN_PATH);

    // Register click handler — trigger registered by STRING function name
    t = TriggerCreate("BehaviorContainerSendHandler");
    TriggerAddEventDialogControl(t, c_playerAny, BehaviorContainer.addButton,
        c_triggerControlEventTypeClick);
    TriggerAddEventDialogControl(t, c_playerAny, BehaviorContainer.removeButton,
        c_triggerControlEventTypeClick);
}

Key functions used:

Function	Purpose
DialogControlHookupStandard(type, path)	Hook a root-level frame by absolute XML path
DialogControlHookup(parent, type, childPath)	Hook a child control relative to a parent panel
DialogControlGetPropertyAsString(ctrl, prop, player)	Read text/string property
DialogControlSetPropertyAsString(ctrl, prop, pg, val)	Set text/string property
DialogControlGetPropertyAsInt(ctrl, prop, player)	Read int property (e.g. selection index)
DialogControlGetSelectedItem(list, player)	Get selected listbox item index
DialogControlAddItem(list, pg, text)	Add item to a listbox/pulldown
DialogControlRemoveAllItems(list, pg)	Clear all listbox items
DialogControlGetItemCount(list, player)	Count items in a listbox

Button

libNtve_gf_CreateDialogItemButton(
    lv_dlg,          // parent dialog
    200, 50,         // width, height
    c_anchorTopLeft, // anchor within dialog
    10, 10,          // x, y offset from anchor
    StringToText(""),         // tooltip
    StringToText("Click Me"), // label
    ""               // style (empty = default)
);
dialogcontrol lv_btn = DialogControlLastCreated();

Label

libNtve_gf_CreateDialogItemLabel(
    lv_dlg,
    300, 40,
    c_anchorTopLeft,
    10, 60,
    StringToText("Score: 0"),  // initial text
    ColorWithAlpha(255, 255, 255, 255), // white
    false,           // word wrap
    0                // wrap width (0 = no limit)
);
dialogcontrol lv_label = DialogControlLastCreated();

Image

libNtve_gf_CreateDialogItemImage(
    lv_dlg,
    100, 100,
    c_anchorTopLeft,
    10, 110,
    StringToText(""),   // tooltip
    "Assets\\Textures\\UI_Protoss_Something.dds",
    c_triggeredImageTypeNormal,
    false,   // tiled
    ColorWithAlpha(255, 255, 255, 255)
);
dialogcontrol lv_img = DialogControlLastCreated();

Portrait / unit image

libNtve_gf_CreateDialogItemPortrait(
    lv_dlg, 150, 150, c_anchorTopLeft, 10, 10,
    StringToText(""), -1,
    null, // unit (null for no unit)
    true  // use unit model
);

---

Updating Controls

// Change text
libNtve_gf_SetDialogItemText(lv_label, StringToText("Score: 42"), PlayerGroupAll());

// Change image
libNtve_gf_SetDialogItemImage(lv_img, "Assets\\Textures\\NewImage.dds", PlayerGroupAll());

// Enable / disable
DialogControlSetEnabled(lv_btn, PlayerGroupAll(), true);
DialogControlSetEnabled(lv_btn, PlayerGroupSingle(lv_player), false);

// Guard against an uninitialized control (c_invalidDialogControlId == 0)
if (lv_label != c_invalidDialogControlId) {
    libNtve_gf_SetDialogItemText(lv_label, StringToText("..."), PlayerGroupAll());
}

---

Dialog Events

Register click handler on ALL controls in a dialog

TriggerAddEventDialogControl(
    myTrigger,
    c_playerAny,
    c_invalidDialogControlId,        // 0 = any control in dialog
    c_triggerControlEventTypeClick
);

Register click handler on a specific button

TriggerAddEventDialogControl(
    myTrigger,
    c_playerAny,
    lv_btn,
    c_triggerControlEventTypeClick
);

Reading the event inside the handler

bool MyClickHandler(bool testCond, bool runActions) {
    dialogcontrol clicked = EventDialogControl();
    int player = EventPlayer();

    if (clicked == gv_LockInButton) {
        HeroSelection_SelectHero(player, gv_SelectedHero[player]);
    }
    return true;
}

---

Hero Selection Dialog Pattern (SSF)

SSF uses hooked XML frames for hero selection. Each panel is a separate file under scripts/UI/. The HeroSelection.galaxy file drives the logic while UI-HeroPanel.galaxy owns the dialog controls:

// UI-HeroPanel.galaxy
static dialogcontrol HeroPanel_MainFrame;
static dialogcontrol[gv_MaxAmountHeroes + 1] HeroPanel_HeroButtons;

void HeroPanel_Init() {
    HeroPanel_MainFrame = DialogControlHookup(gv_UI_MasterFrame, c_triggerControlTypePanel, "HeroPanel");
    int i = 1;
    for (; i <= gv_MaxAmountHeroes; i += 1) {
        HeroPanel_HeroButtons[i] = DialogControlHookup(HeroPanel_MainFrame, c_triggerControlTypeButton, "Hero" + IntToString(i));
    }
    TriggerAddEventDialogControl(TriggerCreate("HeroPanel_Click"), c_playerAny, c_invalidDialogControlId, c_triggerControlEventTypeClick);
}

void HeroPanel_UpdatePlayer(int playerID) {
    // Show/hide based on unlock state
    int i = 1;
    for (; i <= gv_MaxAmountHeroes; i += 1) {
        bool unlocked = ((gv_PlayerStats[playerID].heroUnlocked & (1 << i)) != 0);
        DialogControlSetEnabled(HeroPanel_HeroButtons[i], PlayerGroupSingle(playerID), unlocked);
    }
}

Level-up upgrade panel

bool HeroLevelUp_Handler(bool testCond, bool runActions) {
    unit hero = EventUnit();
    int level = UnitXPGetCurrentLevel(hero);
    int player = UnitGetOwner(hero);
    // Show appropriate upgrade panel for this level
    if (level == 2) {
        DialogControlSetVisible(gv_UpgradeFrame_Level2, PlayerGroupSingle(player), true);
    }
    return true;
}

---

Messages & Feedback

Display message in HUD area

UIDisplayMessage(PlayerGroupAll(), c_messageAreaChat,     StringToText("GG!"));
UIDisplayMessage(PlayerGroupAll(), c_messageAreaSubtitle, StringToText("Round 1 – Fight!"));
UIDisplayMessage(
    PlayerGroupSingle(lv_player),
    c_messageAreaChat,
    StringToText("Not enough minerals!")
);

// Area constants
c_messageAreaChat         // bottom-left chat area
c_messageAreaSubtitle     // center subtitle
c_messageAreaDefault
c_messageAreaObjective
c_messageAreaWarning

Error message with sound

libNtve_gf_UIErrorMessage(
    PlayerGroupSingle(lv_player),
    StringToText("Cannot afford this upgrade!"),
    SoundLink("UI_GenericError", -1)
);

---

Localized Text

// Read from GameStrings.txt / Trig/ namespace
text lv_msg = StringExternal("Trig/Bosskilled");

// With variable replacements (SSF pattern)
text lv_result = Utility_TextExpressionReplacement3(
    "Trig/Bosskilled",
    IntToText(gv_Part_AmountObjectivesDefeated),
    IntToText(gv_Part_AmountObjectivesMax),
    IntToText(gv_Difficulty_Points)
);

// Colorize player name
color playerColor = libNtve_gf_ConvertPlayerColorToColor(PlayerGetColorIndex(playerID, false));
text colored = TextWithColor(StringToText(PlayerName(playerID)), playerColor);

// Combine text
text lv_msg2 = StringToText("+") + FixedToText(amount, 2);

---

UI Alerts & Minimap

// Toggle built-in alert types
UISetAlertTypeVisible(PlayerGroupAll(), "AlertWorkerAttacked", false);

// Minimap ping
PingCreate(PlayerGroupAll(), lv_point, 10.0, ColorWithAlpha(255, 0, 0, 255), "");

---

Scoreboard / Stats Panel (SSF pattern)

SSF uses hooked XML frames for the player board, updated by calling PlayerBoard_UpdatePlayer(playerID):

// UI-PlayerBoard.galaxy
static dialogcontrol PlayerBoard_MainFrame;
static dialogcontrol[gv_MaxAmountPlayers + 1] PlayerBoard_KillsLabel;
static dialogcontrol[gv_MaxAmountPlayers + 1] PlayerBoard_ScoreLabel;

void PlayerBoard_Init() {
    PlayerBoard_MainFrame = DialogControlHookup(gv_UI_MasterFrame, c_triggerControlTypePanel, "PlayerBoard");
    int i = 1;
    for (; i <= gv_MaxAmountPlayers; i += 1) {
        PlayerBoard_KillsLabel[i] = DialogControlHookup(PlayerBoard_MainFrame, c_triggerControlTypeLabel, "Player" + IntToString(i) + "/Kills");
    }
}

void PlayerBoard_UpdatePlayer(int playerID) {
    libNtve_gf_SetDialogItemText(
        PlayerBoard_KillsLabel[playerID],
        IntToText(gv_PlayerStats[playerID].kills),
        PlayerGroupAll()
    );
}

UI mode control

// Switch player(s) to fullscreen UI (hides default game HUD)
UISetMode(PlayerGroupAll(), c_uiModeFullscreen, c_transitionDurationImmediate);

// Hide specific HUD frames
UISetFrameVisible(PlayerGroupAll(), c_syncFrameTypeSupply,        false);  // hide supply display
UISetFrameVisible(PlayerGroupAll(), c_syncFrameTypeResourcePanel, false);  // hide minerals/gas panel

// Hide alert types
UISetAlertTypeVisible(PlayerGroupAll(), "AlertWorkerAttacked", false);

---

Help Panel (Campaign)

// Hide the tech tree button inside the help panel
HelpPanelEnableTechTreeButton(PlayerGroupAll(), false);

// Navigate to a specific help panel page
HelpPanelDisplayPage(PlayerGroupAll(), c_helpPanelPageTutorials);

// Register a unit type on the help panel's unit tab
libCamp_gf_AddUnitTypeToUnitHelpPanel("Marine", false, lv_player);

// Create a campaign tutorial entry (shows in the help panel)
libCamp_gf_CreateCampaignTutorial(
    StringToText("Tutorial Title"),
    StringToText("Explanation body text here."),
    "Assets\\Textures\\btn-unit-terr-marine.dds",   // icon path
    ""   // video path (or empty)
);

---

UI Alerts & Objective Pings

// Beacon / alert for a map point (flashes minimap + compass)
UIAlertPoint("TriggerName", PlayerGroupSingle(lv_player), StringExternal("Param/Alert/..."), null, lv_point);

// Beacon / alert centered on a specific unit
UIAlertUnit("TriggerName", lv_player, StringExternal("Param/Alert/..."), null, lv_unit);

// Minimap ping with facing angle (used for objectives)
libNtve_gf_CreatePingFacingAngle(
    PlayerGroupAll(),
    "PingObjective",                   // ping type from data
    lv_point,
    ColorWithAlpha(0, 100, 0, 0),      // RGBA color (0-255 or 0-1 depending on version)
    0.0,                               // duration (0 = permanent until destroyed)
    270.0                              // facing angle
);
ping lv_ping = PingLastCreated();
PingSetScale(lv_ping, 0.75);
PingSetTooltip(lv_ping, StringToText("Objective location"));

---

Dialog Layout & Resolution

Source: Dialogs guide — Dialog Formatting

Internal resolution system

Dialogs are sized in an internal pixel space — they look the same regardless of the player's monitor resolution. The SC2 client maps this internal space to the player's screen:

Screen ratio	Internal resolution (width × height)
4:3	1600 × 1200
16:9	2133 × 1200
16:10	1920 × 1200

Height is always 1200 internal pixels. Width scales by ratio.

Practical rule: Keep dialogs no wider than 1600 px (the narrowest 4:3 width) to ensure they never clip or overflow on any screen ratio. Design at 1600 px wide and you're safe for all players.

// Safe full-screen-width dialog (works on all ratios)
dialog gv_mainDialog = DialogCreate(
    1600,           // safe max width
    1200,           // full height
    c_anchorCenter,
    0, 0,
    false
);

// For UI elements, anchor to edges rather than absolute coords
// so they stay on-screen across all ratios:
// c_anchorTopLeft, c_anchorTopRight, c_anchorBottomLeft, c_anchorBottomRight, c_anchorCenter

DialogControlCreateFromTemplate

Wrapper pattern that avoids the GUI editor crash when creating items from a template string:

// Use this helper instead of the GUI "Create Dialog Item From Template" action
int CreateDialogItemFromTemplate(int dialog, int type, string template) {
    return DialogControlCreateFromTemplate(dialog, type, template);
}