Sliders change unwanted on clicking other slider

[ghost]

Version/Branch of Dear ImGui:

1.90.4

Back-ends:

IrrImGUI

Compiler, OS:

MSVC (Windows)

Full config/build information:

No response

Details:

Look at code/video

Screenshots/Video:

error_w_sliders.webm

Minimal, Complete and Verifiable Example code:

        static int o_selection=1;
	ImGui::SetNextItemWidth(p(screenSize.Width,68));
	ImGui::SliderInt("", &o_selection, 1, 2, "");

	if(o_selection==1) { ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.0f, 0.0f, 1.0f)); }
	ImGui::Text(translate("Online Multiplayer").c_str());
	if(o_selection==1) { ImGui::PopStyleColor(); } else { ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 0.0f, 0.0f, 1.0f)); }
	ImGui::SameLine();
	ImGui::SetCursorPosX(p(screenSize.Width,69)-ImGui::CalcTextSize(translate("Local Singleplayer").c_str()).x);
	ImGui::Text(translate("Local Singleplayer").c_str());
	if(o_selection==2){ ImGui::PopStyleColor(); }

	ImGui::SeparatorText(translate("Difficulty").c_str());
	static float difficulty=0.5;
	ImGui::SetNextItemWidth(p(screenSize.Width,68));
	ImGui::SliderFloat("", &difficulty, 0.5f, 10.0f);

[PathogenDavid]

See this FAQ entry: https://github.com/ocornut/imgui/blob/286cd5bd41e8bf0062a9a5f6373dc1a091fe6ed2/docs/FAQ.md#q-about-the-id-stack-system

[ocornut]

ID must generally be unique as stated in FAQ. You can use "##SomeName" to hide the label. See link posted by David.

[PathogenDavid]

Also make sure you have asserts enabled (usually that just means running a debug build instead of release), there's one that would've alerted you to your empty ID mistake:

imgui/imgui.cpp

Lines 9902 to 9905 in 286cd5b

	// [DEBUG] People keep stumbling on this problem and using "" as identifier in the root of a window instead of "##something".
	// Empty identifier are valid and useful in a small amount of cases, but 99.9% of the time you want to use "##something".
	// READ THE FAQ: https://dearimgui.com/faq
	IM_ASSERT(id != window->ID && "Cannot have an empty ID at the root of a window. If you need an empty label, use ## and read the FAQ about how the ID Stack works!");

[ghost]

Ah nice! Thanks the ID is the name?

[PathogenDavid]

Yes, but also no. You should read the full FAQ for the details.

The label and the ID are separate concepts. The ID is also influenced by the label, but also by the window which contains the widget. Additionally the visible part of the label isn't used for the ID when using ###.