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Updated FAQ and Readme with more prominent info about WantCaptureMouse etc. flags (#635)

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ocornut 2016-05-06 09:18:07 +02:00
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1
README.md
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@ -99,6 +99,7 @@ The library started its life and is best known as "ImGui" only due to the fact t
<br><b>I integrated ImGui in my engine and the text or lines are blurry..</b>
<br><b>I integrated ImGui in my engine and some elements are disappearing when I move windows around..</b>
<br><b>How can I have multiple widgets with the same label? Can I have widget without a label? (Yes). A primer on the purpose of labels/IDs.</b>
<br><b>How can I tell when ImGui wants my mouse/keyboard inputs and when I can pass them to my application?</b>
<br><b>How can I load a different font than the default?</b>
<br><b>How can I load multiple fonts?</b>
<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>

12
imgui.cpp
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@ -23,6 +23,7 @@
- I integrated ImGui in my engine and the text or lines are blurry..
- I integrated ImGui in my engine and some elements are clipping or disappearing when I move windows around..
- How can I have multiple widgets with the same label? Can I have widget without a label? (Yes). A primer on the purpose of labels/IDs.
- How can I tell when ImGui wants my mouse/keyboard inputs and when I can pass them to my application?
- How can I load a different font than the default?
- How can I load multiple fonts?
- How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?
@ -141,9 +142,8 @@
SwapBuffers();
}
- after calling ImGui::NewFrame() you can read back flags from the IO structure to tell how ImGui intends to use your inputs.
When 'io.WantCaptureMouse' or 'io.WantCaptureKeyboard' flags are set you may want to discard/hide the inputs from the rest of your application.
When 'io.WantInputsCharacters' is set to may want to notify your OS to popup an on-screen keyboard, if available.
- You can read back 'io.WantCaptureMouse', 'io.WantCaptureKeybord' etc. flags from the IO structure to tell how ImGui intends to use your
inputs and to know if you should share them or hide them from the rest of your application. Read the FAQ below for more information.
API BREAKING CHANGES
@ -379,6 +379,12 @@
e.g. when displaying a single object that may change over time (1-1 relationship), using a static string as ID will preserve your node open/closed state when the targeted object change.
e.g. when displaying a list of objects, using indices or pointers as ID will preserve the node open/closed state differently. experiment and see what makes more sense!
Q: How can I tell when ImGui wants my mouse/keyboard inputs and when I can pass them to my application?
A: You can read the 'io.WantCaptureXXX' flags in the ImGuiIO structure. Preferably read them after calling ImGui::NewFrame() to avoid those flags lagging by one frame.
When 'io.WantCaptureMouse' or 'io.WantCaptureKeyboard' flags are set you may want to discard/hide the inputs from the rest of your application.
When 'io.WantInputsCharacters' is set to may want to notify your OS to popup an on-screen keyboard, if available.
ImGui is tracking dragging and widget activity that may occur outside the boundary of a window, so 'io.WantCaptureMouse' is a more accurate and complete than testing for ImGui::IsMouseHoveringAnyWindow().
Q: How can I load a different font than the default? (default is an embedded version of ProggyClean.ttf, rendered at size 13)
A: Use the font atlas to load the TTF file you want: