Function IsKeyChordPotentiallyCharInput

src/imgui/imgui.cpp:9488–9504

- We need this to filter some Shortcut() routes when an item e.g. an InputText() is active e.g. ImGuiKey_G won't be considered a shortcut when item is active, but ImGuiMod|ImGuiKey_G can be. - This is also used by UpdateInputEvents() to avoid trickling in the most common case of e.g. pressing ImGuiKey_G also emitting a G character.

//   e.g. ImGuiKey_G won't be considered a shortcut when item is active, but ImGuiMod|ImGuiKey_G can be.
// - This is also used by UpdateInputEvents() to avoid trickling in the most common case of e.g. pressing ImGuiKey_G also emitting a G character.
static bool IsKeyChordPotentiallyCharInput(ImGuiKeyChord key_chord)
{
    // Mimic 'ignore_char_inputs' logic in InputText()
    ImGuiContext& g = *GImGui;

    // When the right mods are pressed it cannot be a char input so we won't filter the shortcut out.
    ImGuiKey mods = (ImGuiKey)(key_chord & ImGuiMod_Mask_);
    const bool ignore_char_inputs = ((mods & ImGuiMod_Ctrl) && !(mods & ImGuiMod_Alt)) || (g.IO.ConfigMacOSXBehaviors && (mods & ImGuiMod_Ctrl));
    if (ignore_char_inputs)
        return false;

    // Return true for A-Z, 0-9 and other keys associated to char inputs. Other keys such as F1-F12 won't be filtered.
    ImGuiKey key = (ImGuiKey)(key_chord & ~ImGuiMod_Mask_);
    if (key == ImGuiKey_None)
        return false;
    return g.KeysMayBeCharInput.TestBit(key);
}

// Request a desired route for an input chord (key + mods).
// Return true if the route is available this frame.