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| 1 | pmbaty | 1 | /* |
| 2 | Simple DirectMedia Layer |
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| 8 | pmbaty | 3 | Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> |
| 1 | pmbaty | 4 | |
| 5 | This software is provided 'as-is', without any express or implied |
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| 6 | warranty. In no event will the authors be held liable for any damages |
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| 7 | arising from the use of this software. |
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| 8 | |||
| 9 | Permission is granted to anyone to use this software for any purpose, |
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| 10 | including commercial applications, and to alter it and redistribute it |
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| 11 | freely, subject to the following restrictions: |
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| 12 | |||
| 13 | 1. The origin of this software must not be misrepresented; you must not |
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| 14 | claim that you wrote the original software. If you use this software |
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| 15 | in a product, an acknowledgment in the product documentation would be |
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| 16 | appreciated but is not required. |
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| 17 | 2. Altered source versions must be plainly marked as such, and must not be |
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| 18 | misrepresented as being the original software. |
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| 19 | 3. This notice may not be removed or altered from any source distribution. |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * \file SDL_keyboard.h |
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| 24 | * |
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| 25 | * Include file for SDL keyboard event handling |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef SDL_keyboard_h_ |
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| 29 | #define SDL_keyboard_h_ |
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| 30 | |||
| 31 | #include "SDL_stdinc.h" |
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| 32 | #include "SDL_error.h" |
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| 33 | #include "SDL_keycode.h" |
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| 34 | #include "SDL_video.h" |
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| 35 | |||
| 36 | #include "begin_code.h" |
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| 37 | /* Set up for C function definitions, even when using C++ */ |
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| 38 | #ifdef __cplusplus |
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| 39 | extern "C" { |
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| 40 | #endif |
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| 41 | |||
| 42 | /** |
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| 43 | * \brief The SDL keysym structure, used in key events. |
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| 44 | * |
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| 45 | * \note If you are looking for translated character input, see the ::SDL_TEXTINPUT event. |
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| 46 | */ |
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| 47 | typedef struct SDL_Keysym |
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| 48 | { |
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| 49 | SDL_Scancode scancode; /**< SDL physical key code - see ::SDL_Scancode for details */ |
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| 50 | SDL_Keycode sym; /**< SDL virtual key code - see ::SDL_Keycode for details */ |
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| 51 | Uint16 mod; /**< current key modifiers */ |
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| 52 | Uint32 unused; |
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| 53 | } SDL_Keysym; |
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| 54 | |||
| 55 | /* Function prototypes */ |
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| 56 | |||
| 57 | /** |
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| 58 | * \brief Get the window which currently has keyboard focus. |
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| 59 | */ |
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| 60 | extern DECLSPEC SDL_Window * SDLCALL SDL_GetKeyboardFocus(void); |
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| 61 | |||
| 62 | /** |
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| 63 | * \brief Get a snapshot of the current state of the keyboard. |
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| 64 | * |
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| 65 | * \param numkeys if non-NULL, receives the length of the returned array. |
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| 66 | * |
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| 67 | * \return An array of key states. Indexes into this array are obtained by using ::SDL_Scancode values. |
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| 68 | * |
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| 69 | * \b Example: |
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| 70 | * \code |
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| 71 | * const Uint8 *state = SDL_GetKeyboardState(NULL); |
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| 72 | * if ( state[SDL_SCANCODE_RETURN] ) { |
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| 73 | * printf("<RETURN> is pressed.\n"); |
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| 74 | * } |
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| 75 | * \endcode |
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| 76 | */ |
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| 77 | extern DECLSPEC const Uint8 *SDLCALL SDL_GetKeyboardState(int *numkeys); |
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| 78 | |||
| 79 | /** |
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| 80 | * \brief Get the current key modifier state for the keyboard. |
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| 81 | */ |
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| 82 | extern DECLSPEC SDL_Keymod SDLCALL SDL_GetModState(void); |
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| 83 | |||
| 84 | /** |
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| 85 | * \brief Set the current key modifier state for the keyboard. |
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| 86 | * |
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| 87 | * \note This does not change the keyboard state, only the key modifier flags. |
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| 88 | */ |
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| 89 | extern DECLSPEC void SDLCALL SDL_SetModState(SDL_Keymod modstate); |
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| 90 | |||
| 91 | /** |
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| 92 | * \brief Get the key code corresponding to the given scancode according |
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| 93 | * to the current keyboard layout. |
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| 94 | * |
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| 95 | * See ::SDL_Keycode for details. |
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| 96 | * |
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| 97 | * \sa SDL_GetKeyName() |
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| 98 | */ |
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| 99 | extern DECLSPEC SDL_Keycode SDLCALL SDL_GetKeyFromScancode(SDL_Scancode scancode); |
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| 100 | |||
| 101 | /** |
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| 102 | * \brief Get the scancode corresponding to the given key code according to the |
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| 103 | * current keyboard layout. |
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| 104 | * |
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| 105 | * See ::SDL_Scancode for details. |
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| 106 | * |
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| 107 | * \sa SDL_GetScancodeName() |
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| 108 | */ |
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| 109 | extern DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromKey(SDL_Keycode key); |
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| 110 | |||
| 111 | /** |
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| 112 | * \brief Get a human-readable name for a scancode. |
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| 113 | * |
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| 114 | * \return A pointer to the name for the scancode. |
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| 115 | * If the scancode doesn't have a name, this function returns |
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| 116 | * an empty string (""). |
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| 117 | * |
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| 118 | * \sa SDL_Scancode |
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| 119 | */ |
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| 120 | extern DECLSPEC const char *SDLCALL SDL_GetScancodeName(SDL_Scancode scancode); |
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| 121 | |||
| 122 | /** |
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| 123 | * \brief Get a scancode from a human-readable name |
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| 124 | * |
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| 125 | * \return scancode, or SDL_SCANCODE_UNKNOWN if the name wasn't recognized |
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| 126 | * |
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| 127 | * \sa SDL_Scancode |
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| 128 | */ |
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| 129 | extern DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromName(const char *name); |
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| 130 | |||
| 131 | /** |
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| 132 | * \brief Get a human-readable name for a key. |
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| 133 | * |
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| 134 | * \return A pointer to a UTF-8 string that stays valid at least until the next |
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| 135 | * call to this function. If you need it around any longer, you must |
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| 136 | * copy it. If the key doesn't have a name, this function returns an |
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| 137 | * empty string (""). |
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| 138 | * |
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| 139 | * \sa SDL_Keycode |
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| 140 | */ |
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| 141 | extern DECLSPEC const char *SDLCALL SDL_GetKeyName(SDL_Keycode key); |
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| 142 | |||
| 143 | /** |
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| 144 | * \brief Get a key code from a human-readable name |
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| 145 | * |
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| 146 | * \return key code, or SDLK_UNKNOWN if the name wasn't recognized |
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| 147 | * |
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| 148 | * \sa SDL_Keycode |
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| 149 | */ |
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| 150 | extern DECLSPEC SDL_Keycode SDLCALL SDL_GetKeyFromName(const char *name); |
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| 151 | |||
| 152 | /** |
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| 153 | * \brief Start accepting Unicode text input events. |
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| 154 | * This function will show the on-screen keyboard if supported. |
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| 155 | * |
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| 156 | * \sa SDL_StopTextInput() |
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| 157 | * \sa SDL_SetTextInputRect() |
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| 158 | * \sa SDL_HasScreenKeyboardSupport() |
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| 159 | */ |
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| 160 | extern DECLSPEC void SDLCALL SDL_StartTextInput(void); |
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| 161 | |||
| 162 | /** |
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| 163 | * \brief Return whether or not Unicode text input events are enabled. |
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| 164 | * |
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| 165 | * \sa SDL_StartTextInput() |
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| 166 | * \sa SDL_StopTextInput() |
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| 167 | */ |
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| 168 | extern DECLSPEC SDL_bool SDLCALL SDL_IsTextInputActive(void); |
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| 169 | |||
| 170 | /** |
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| 171 | * \brief Stop receiving any text input events. |
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| 172 | * This function will hide the on-screen keyboard if supported. |
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| 173 | * |
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| 174 | * \sa SDL_StartTextInput() |
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| 175 | * \sa SDL_HasScreenKeyboardSupport() |
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| 176 | */ |
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| 177 | extern DECLSPEC void SDLCALL SDL_StopTextInput(void); |
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| 178 | |||
| 179 | /** |
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| 180 | * \brief Set the rectangle used to type Unicode text inputs. |
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| 181 | * This is used as a hint for IME and on-screen keyboard placement. |
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| 182 | * |
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| 183 | * \sa SDL_StartTextInput() |
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| 184 | */ |
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| 185 | extern DECLSPEC void SDLCALL SDL_SetTextInputRect(SDL_Rect *rect); |
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| 186 | |||
| 187 | /** |
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| 188 | * \brief Returns whether the platform has some screen keyboard support. |
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| 189 | * |
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| 190 | * \return SDL_TRUE if some keyboard support is available else SDL_FALSE. |
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| 191 | * |
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| 192 | * \note Not all screen keyboard functions are supported on all platforms. |
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| 193 | * |
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| 194 | * \sa SDL_IsScreenKeyboardShown() |
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| 195 | */ |
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| 196 | extern DECLSPEC SDL_bool SDLCALL SDL_HasScreenKeyboardSupport(void); |
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| 197 | |||
| 198 | /** |
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| 199 | * \brief Returns whether the screen keyboard is shown for given window. |
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| 200 | * |
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| 201 | * \param window The window for which screen keyboard should be queried. |
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| 202 | * |
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| 203 | * \return SDL_TRUE if screen keyboard is shown else SDL_FALSE. |
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| 204 | * |
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| 205 | * \sa SDL_HasScreenKeyboardSupport() |
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| 206 | */ |
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| 207 | extern DECLSPEC SDL_bool SDLCALL SDL_IsScreenKeyboardShown(SDL_Window *window); |
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| 208 | |||
| 209 | /* Ends C function definitions when using C++ */ |
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| 210 | #ifdef __cplusplus |
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| 211 | } |
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| 212 | #endif |
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| 213 | #include "close_code.h" |
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| 214 | |||
| 215 | #endif /* SDL_keyboard_h_ */ |
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| 216 | |||
| 217 | /* vi: set ts=4 sw=4 expandtab: */ |