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Comments in imgui.h
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omar
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imgui.h
50
imgui.h
@ -112,6 +112,7 @@ Index of this file:
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// Forward declarations and basic types
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//-----------------------------------------------------------------------------
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// Forward declarations
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struct ImDrawChannel; // Temporary storage to output draw commands out of order, used by ImDrawListSplitter and ImDrawList::ChannelsSplit()
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struct ImDrawCmd; // A single draw command within a parent ImDrawList (generally maps to 1 GPU draw call, unless it is a callback)
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struct ImDrawData; // All draw command lists required to render the frame + pos/size coordinates to use for the projection matrix.
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@ -135,19 +136,12 @@ struct ImGuiSizeCallbackData; // Callback data when using SetNextWindowSiz
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struct ImGuiStorage; // Helper for key->value storage
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struct ImGuiStyle; // Runtime data for styling/colors
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struct ImGuiTextBuffer; // Helper to hold and append into a text buffer (~string builder)
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struct ImGuiTextFilter; // Helper to parse and apply text filters (e.g. "aaaaa[,bbbb][,ccccc]")
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struct ImGuiTextFilter; // Helper to parse and apply text filters (e.g. "aaaaa[,bbbbb][,ccccc]")
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// Typedefs and Enums/Flags (declared as int for compatibility with old C++, to allow using as flags and to not pollute the top of this file)
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// Use your programming IDE "Go to definition" facility on the names in the central column below to find the actual flags/enum lists.
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#ifndef ImTextureID
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typedef void* ImTextureID; // User data to identify a texture (this is whatever to you want it to be! read the FAQ about ImTextureID in imgui.cpp)
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#endif
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typedef unsigned int ImGuiID; // Unique ID used by widgets (typically hashed from a stack of string)
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#ifndef ImWchar
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#define ImWchar ImWchar16
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#endif
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typedef unsigned short ImWchar16; // A single U16 character for keyboard input/display. We encode them as multi bytes UTF-8 when used in strings.
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typedef unsigned int ImWchar32; // A single U32 character for keyboard input/display. Define ImWchar to ImWchar32 to use it. See imconfig.h .
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// Enums/Flags (declared as int for compatibility with old C++, to allow using as flags and to not pollute the top of this file)
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// - Tip: Use your programming IDE navigation facilities on the names in the _central column_ below to find the actual flags/enum lists!
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// In Visual Studio IDE: CTRL+comma ("Edit.NavigateTo") can follow symbols in comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
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// With Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols in comments.
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typedef int ImGuiCol; // -> enum ImGuiCol_ // Enum: A color identifier for styling
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typedef int ImGuiCond; // -> enum ImGuiCond_ // Enum: A condition for many Set*() functions
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typedef int ImGuiDataType; // -> enum ImGuiDataType_ // Enum: A primary data type
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@ -174,10 +168,21 @@ typedef int ImGuiTabBarFlags; // -> enum ImGuiTabBarFlags_ // Flags: f
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typedef int ImGuiTabItemFlags; // -> enum ImGuiTabItemFlags_ // Flags: for BeginTabItem()
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typedef int ImGuiTreeNodeFlags; // -> enum ImGuiTreeNodeFlags_ // Flags: for TreeNode(), TreeNodeEx(), CollapsingHeader()
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typedef int ImGuiWindowFlags; // -> enum ImGuiWindowFlags_ // Flags: for Begin(), BeginChild()
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// Other types
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#ifndef ImTextureID // ImTextureID [configurable type: override in imconfig.h]
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typedef void* ImTextureID; // User data for rendering back-end to identify a texture. This is whatever to you want it to be! read the FAQ about ImTextureID for details.
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#endif
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#ifndef ImWchar // ImWchar [configurable type: override in imconfig.h]
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#define ImWchar ImWchar16 // Storage for a single decoded character/code point, default to 16-bit. Set to ImWchar32 to support larger Unicode planes. Note that we generally support UTF-8 encoded string, this is storage for a decoded character.
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#endif
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typedef unsigned int ImGuiID; // A unique ID used by widgets, typically hashed from a stack of string.
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typedef unsigned short ImWchar16; // A single decoded U16 character/code point for keyboard input/display. We encode them as multi bytes UTF-8 when used in strings.
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typedef unsigned int ImWchar32; // A single decoded U32 character/code point for keyboard input/display. To enable, use '#define ImWchar ImWchar32' in imconfig.h.
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typedef int (*ImGuiInputTextCallback)(ImGuiInputTextCallbackData *data);
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typedef void (*ImGuiSizeCallback)(ImGuiSizeCallbackData* data);
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// Scalar data types
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// Basic scalar data types
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typedef signed char ImS8; // 8-bit signed integer
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typedef unsigned char ImU8; // 8-bit unsigned integer
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typedef signed short ImS16; // 16-bit signed integer
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@ -196,7 +201,7 @@ typedef signed long long ImS64; // 64-bit signed integer (post C++11)
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typedef unsigned long long ImU64; // 64-bit unsigned integer (post C++11)
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#endif
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// 2D vector (often used to store positions, sizes, etc.)
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// 2D vector (often used to store positions or sizes)
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struct ImVec2
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{
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float x, y;
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@ -234,7 +239,6 @@ namespace ImGui
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IMGUI_API void DestroyContext(ImGuiContext* ctx = NULL); // NULL = destroy current context
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IMGUI_API ImGuiContext* GetCurrentContext();
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IMGUI_API void SetCurrentContext(ImGuiContext* ctx);
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IMGUI_API bool DebugCheckVersionAndDataLayout(const char* version_str, size_t sz_io, size_t sz_style, size_t sz_vec2, size_t sz_vec4, size_t sz_drawvert, size_t sz_drawidx);
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// Main
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IMGUI_API ImGuiIO& GetIO(); // access the IO structure (mouse/keyboard/gamepad inputs, time, various configuration options/flags)
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@ -633,7 +637,7 @@ namespace ImGui
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IMGUI_API void LogText(const char* fmt, ...) IM_FMTARGS(1); // pass text data straight to log (without being displayed)
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// Drag and Drop
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// [BETA API] API may evolve!
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// - [BETA API] API may evolve!
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IMGUI_API bool BeginDragDropSource(ImGuiDragDropFlags flags = 0); // call when the current item is active. If this return true, you can call SetDragDropPayload() + EndDragDropSource()
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IMGUI_API bool SetDragDropPayload(const char* type, const void* data, size_t sz, ImGuiCond cond = 0); // type is a user defined string of maximum 32 characters. Strings starting with '_' are reserved for dear imgui internal types. Data is copied and held by imgui.
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IMGUI_API void EndDragDropSource(); // only call EndDragDropSource() if BeginDragDropSource() returns true!
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@ -726,7 +730,8 @@ namespace ImGui
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IMGUI_API void SetMouseCursor(ImGuiMouseCursor cursor_type); // set desired cursor type
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IMGUI_API void CaptureMouseFromApp(bool want_capture_mouse_value = true); // attention: misleading name! manually override io.WantCaptureMouse flag next frame (said flag is entirely left for your application to handle). This is equivalent to setting "io.WantCaptureMouse = want_capture_mouse_value;" after the next NewFrame() call.
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// Clipboard Utilities (also see the LogToClipboard() function to capture or output text data to the clipboard)
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// Clipboard Utilities
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// - Also see the LogToClipboard() function to capture GUI into clipboard, or easily output text data to the clipboard.
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IMGUI_API const char* GetClipboardText();
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IMGUI_API void SetClipboardText(const char* text);
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@ -738,6 +743,9 @@ namespace ImGui
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IMGUI_API void SaveIniSettingsToDisk(const char* ini_filename); // this is automatically called (if io.IniFilename is not empty) a few seconds after any modification that should be reflected in the .ini file (and also by DestroyContext).
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IMGUI_API const char* SaveIniSettingsToMemory(size_t* out_ini_size = NULL); // return a zero-terminated string with the .ini data which you can save by your own mean. call when io.WantSaveIniSettings is set, then save data by your own mean and clear io.WantSaveIniSettings.
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// Debug Utilities
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IMGUI_API bool DebugCheckVersionAndDataLayout(const char* version_str, size_t sz_io, size_t sz_style, size_t sz_vec2, size_t sz_vec4, size_t sz_drawvert, size_t sz_drawidx); // This is called by IMGUI_CHECKVERSION() macro.
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// Memory Allocators
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// - All those functions are not reliant on the current context.
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// - If you reload the contents of imgui.cpp at runtime, you may need to call SetCurrentContext() + SetAllocatorFunctions() again because we use global storage for those.
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@ -1825,7 +1833,7 @@ struct ImColor
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// Hold a series of drawing commands. The user provides a renderer for ImDrawData which essentially contains an array of ImDrawList.
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//-----------------------------------------------------------------------------
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// Draw callbacks for advanced uses.
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// ImDrawCallback: Draw callbacks for advanced uses [configurable type: override in imconfig.h]
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// NB: You most likely do NOT need to use draw callbacks just to create your own widget or customized UI rendering,
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// you can poke into the draw list for that! Draw callback may be useful for example to:
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// A) Change your GPU render state,
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@ -1858,9 +1866,9 @@ struct ImDrawCmd
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ImDrawCmd() { ElemCount = 0; TextureId = (ImTextureID)NULL; VtxOffset = IdxOffset = 0; UserCallback = NULL; UserCallbackData = NULL; }
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};
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// Vertex index
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// (to allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end)
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// (to use 32-bit indices: override with '#define ImDrawIdx unsigned int' in imconfig.h)
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// Vertex index, default to 16-bit
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// To allow large meshes with 16-bit indices: set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' and handle ImDrawCmd::VtxOffset in the renderer back-end (recommended).
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// To use 32-bit indices: override with '#define ImDrawIdx unsigned int' in imconfig.h.
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#ifndef ImDrawIdx
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typedef unsigned short ImDrawIdx;
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#endif
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