How can I eliminate the title bar in ImGui?

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To eliminate the title bar in ImGui, you can use the ImGuiWindowFlags_NoTitleBar flag in the ImGui::Begin() function. Here's an example:

ImGui::Begin("Window Title", nullptr, ImGuiWindowFlags_NoTitleBar);

This will create a window without a title bar. If you also want to remove the border around the window, you can use the ImGuiWindowFlags_NoResize and ImGuiWindowFlags_NoScrollbar flags as well.