Many internal state and tools are exposed in the Metrics window. To access the Metrics window:
You can omit
End(), widgets will be created into an implicit “Debug” window.
You can call
Begin()multiple times to append to a same window from different place.
BeginChild()to put yourself back into the context of another window (see #270
An interesting trick that isn’t obvious is that you can use Begin() just to put yourself into the context of that window. So here I want to react to the user inputting an address to scroll to, I use BeginChild() again on the child that I’ve already drawn so I can use SetScrollFromPosY() on it
ImGui::BeginChild("##scrolling", ImVec2(0, -ImGui::GetFrameHeightWithSpacing())); // ...(draw main content) ImGui::EndChild(); // And then much later in the main window, get back into child context to change scrolling offset ImGui::BeginChild("##scrolling"); ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + (goto_addr / Rows) * line_height); ImGui::End();