Use ### IDs for all ImGui windows.

Makes it easier to change the window title later without "forgetting" the window position.

Author: kblaschke

src/gui/AboutWindow.cpp

@@ -30,7 +30,7 @@ void AboutWindow::Draw()
     }
 
     ImGui::SetNextWindowSize(ImVec2(750, 600), ImGuiCond_FirstUseEver);
-    if (ImGui::Begin("About the projectM SDL Frontend", &_visible, ImGuiWindowFlags_NoCollapse))
+    if (ImGui::Begin("About the projectM SDL Frontend###About", &_visible, ImGuiWindowFlags_NoCollapse))
     {
         _gui.PushToastFont();
         ImGui::TextUnformatted("projectM SDL Frontend");

src/gui/FileChooser.cpp

@@ -94,10 +94,12 @@ bool FileChooser::Draw()
         ChangeDirectory(Poco::Path::home());
     }
 
-    ImGui::OpenPopup(_title.c_str());
+    std::string dialogTileAndId = _title + "###File Chooser";
+
+    ImGui::OpenPopup(dialogTileAndId.c_str());
 
     ImGui::SetNextWindowSize(ImVec2(800, 600), ImGuiCond_FirstUseEver);
-    if (ImGui::BeginPopupModal(_title.c_str(), &_visible, ImGuiWindowFlags_NoCollapse))
+    if (ImGui::BeginPopupModal(dialogTileAndId.c_str(), &_visible, ImGuiWindowFlags_NoCollapse))
     {
         DrawNavButtons();
 

src/gui/HelpWindow.cpp

@@ -32,7 +32,7 @@ void HelpWindow::Draw()
     constexpr ImGuiTableFlags tableFlags = ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg;
 
     ImGui::SetNextWindowSize(ImVec2(1000, 600), ImGuiCond_FirstUseEver);
-    if (ImGui::Begin("Help", &_visible, windowFlags))
+    if (ImGui::Begin("Quick Help###Help", &_visible, windowFlags))
     {
         if (ImGui::BeginTabBar("Help Topics", tabBarFlags))
         {