Enter and Backspace key don't work in text boxes (but imgui callbacks are successfully installed!)

[PcChip]

[Latest ImGui Docking]
[Latest GLFW]
[Visual Studio 2019]

Hello,

using ImGui::InputText , it seems like ImGui ignores the enter and backspace keys

at first I thought it was a bug with the version of GLFW or ImGui I was using, so I updated to latest GLFW and latest Docking ImGui however it still happens

I verified all the ImGui callback handlers are being set, and even write a debug line when they are called,

however when I click the input text line, the enter and backspace key do not register any callbacks in ImGui!

Example: https://i.imgur.com/cZ4YEfH.png

I tried with the flag ImGuiInputTextFlags_EnterReturnsTrue and without

Thanks for any help you might have!

[PcChip]

`
void te2LUAModule::updateFrame(double dt)
{
	static const  ImGuiInputTextFlags flags = ImGuiInputTextFlags_EnterReturnsTrue;
	static bool show = true;

	if (show)
	{
		ImGui::Begin("LUA", &show);
		ImGui::Text("LUA Command: ");
		ImGui::SameLine();
		static char command[256] = ""; 
		
		//io.KeyDown[io.KeyMap[ImGuiKey_Enter]));
		if(ImGui::InputText("", command, 256, flags))
		//ImGui::InputText("##command", command, 256);
		//if(ImGui::IsKeyPressed(ImGuiKey_Enter))
		{
			std::string input(command);
			memset(command, 0, 256);

			auto code_result = lua.script(input, [](lua_State*, sol::protected_function_result pfr) {
				// pfr will contain things that went wrong, for either loading or executing the script
				// Can throw your own custom error
				// You can also just return it, and let the call-site handle the error if necessary.
				return pfr;
				});

			std::cout << "\n";
			/*
			if (code_result.valid())
			{
				std::cout << "Success!\n";
			}*/
			if (!code_result.valid())
			{
				std::cout << "Failed!\n";
			}
			std::cout << "return status: " << (int)code_result.status() << "\n";
		}
		ImGui::End();
	}


}`

[uk1324]

I had the same issue and it was caused by calling ImGui_ImplGlfw_InitForOpenGL before setting my own GLFW input callbacks.

[ocornut]

As answered, this was most likely due to Key callback not being registered or overridden by yours.

Not that CharCallback and KeyCallback are different. I would imagine your app overrode the Key callback and didn't chain properly.

I verified all the ImGui callback handlers are being set, and even write a debug line when they are called,

It's very difficult to very that you did this correctly without explicit sources. But I can't see any reference to a KeyCallback in the screenshot you provided.

Since 2022-02-07 we added ImGui_ImplGlfw_InstallCallbacks() to facilitate installing callbacks after initialization.

Closing this.