Input fields do not keep focus when used in tables

[danbrown3]

Version/Branch of Dear ImGui:

Version: v1.85
Branch: Not sure

Back-end/Renderer/Compiler/OS

Back-ends: imgui_impl_win32.cpp
Operating System: Windows

My Issue/Question:

When using inputs in a table (I tested with InputInt), the text field does not keep focus in between frames.

Standalone, minimal, complete and verifiable example: (see #2261)

const int numCols = 3;
static ImGuiTableFlags flags = ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg;
if (ImGui::BeginTable("TrackerTable", numCols, flags))
{
	ImGui::TableSetupColumn("Title", ImGuiTableColumnFlags_WidthFixed);
	ImGui::TableSetupColumn("Tracking Type", ImGuiTableColumnFlags_WidthFixed);
	ImGui::TableSetupColumn("Current Value", ImGuiTableColumnFlags_WidthFixed, 100);

	ImGui::TableHeadersRow();

	for (auto& myThing : m_myThings)
	{
		ImGui::TableNextRow();
		ImGui::TableNextColumn();

		//Title
		ImGui::Text("%s", myThing.title);
		ImGui::TableNextColumn();
		
		//Tracking Type
		ImGui::Text("Int");
		ImGui::TableNextColumn();

		//Current Value
		ImGui::InputInt("", &myThing.intVal);
		ImGui::TableNextColumn();
	}

	ImGui::EndTable();
}

[ocornut]

Read the FAQ
https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-about-the-id-stack-system

[danbrown3]

Well, there's nothing in that FAQ about text field focus, but I'm guessing you are trying to imply that the focus bug is caused by an ID clash. Would have appreciated something better than RTFM, but I'll give that a try and get back to you.

[danbrown3]

Yes, giving each input a custom ID does fix the problem.

[ocornut]

Generally speaking if you have a loop you’d want to use PushID(index) or another variant in your loop body, if you want to use same name.