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Updated Tips (markdown)

omar 2019-10-13 00:18:27 +02:00
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Tips.md

@ -13,8 +13,8 @@ They will help you understand how Dear ImGui works, and can help you diagnose pr
### Using Begin/BeginChild ### Using Begin/BeginChild
- You can omit `Begin()`/`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. - You can call `Begin()` multiple times to append to a same window from different place.
- Use `Begin()`/`BeginChild()` to put yourself back into the context of another window (see [#270](https://github.com/ocornut/imgui/issues/270) - Use `Begin()`/`BeginChild()` to put yourself back into the context of another window (see [#270](https://github.com/ocornut/imgui/issues/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. 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.
@ -29,6 +29,12 @@ ImGui::SetScrollFromPosY(ImGui::GetCursorStartPos().y + (goto_addr / Rows) * lin
ImGui::End(); ImGui::End();
``` ```
---
### Using ImGuiOnceUponAFrame
The `ImGuiOnceUponAFrame` helper will allow run the block of code only once a frame. You can use it to quickly add custom UI in the middle of a deep nested inner loop in your code. (It is essentially just a helper which stores and compare a frame number).
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### Plot: Use Stride for easily plotting a field in array of structures ### Plot: Use Stride for easily plotting a field in array of structures