Change return type from void to int, for functions that set an error

(SDL_SetError(), SDL_OutOfMemory(), SDL_Unsupported(), SDL_InvalidParam())

Update prototype to forward errors to generic layer, for the functions:
MoveCursor, WarpMouse, GL_DeleteContext, GetDisplayModes.

Check invalid parameter in SDL_SetTextInputRect() generic layer.

include/SDL3/SDL_video.h

@@ -821,12 +821,14 @@ extern DECLSPEC void *SDLCALL SDL_GetWindowData(SDL_Window *window, const char *
  *          `SDL_WINDOWPOS_UNDEFINED`
  * \param y the y coordinate of the window, or `SDL_WINDOWPOS_CENTERED` or
  *          `SDL_WINDOWPOS_UNDEFINED`
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowPosition
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_Window *window, int x, int y);
+extern DECLSPEC int SDLCALL SDL_SetWindowPosition(SDL_Window *window, int x, int y);
 
 /**
  * Get the position of a window, in screen coordinates.
@@ -837,12 +839,14 @@ extern DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_Window *window, int x, in
  * \param window the window to query
  * \param x a pointer filled in with the x position of the window, may be NULL
  * \param y a pointer filled in with the y position of the window, may be NULL
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_SetWindowPosition
  */
-extern DECLSPEC void SDLCALL SDL_GetWindowPosition(SDL_Window *window, int *x, int *y);
+extern DECLSPEC int SDLCALL SDL_GetWindowPosition(SDL_Window *window, int *x, int *y);
 
 /**
  * Set the size of a window's client area, in screen coordinates.
@@ -880,6 +884,8 @@ extern DECLSPEC int SDLCALL SDL_SetWindowSize(SDL_Window *window, int w, int h);
  * \param window the window to query the width and height from
  * \param w a pointer filled in with the width of the window, may be NULL
  * \param h a pointer filled in with the height of the window, may be NULL
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
@@ -887,7 +893,7 @@ extern DECLSPEC int SDLCALL SDL_SetWindowSize(SDL_Window *window, int w, int h);
  * \sa SDL_GetWindowSizeInPixels
  * \sa SDL_SetWindowSize
  */
-extern DECLSPEC void SDLCALL SDL_GetWindowSize(SDL_Window *window, int *w, int *h);
+extern DECLSPEC int SDLCALL SDL_GetWindowSize(SDL_Window *window, int *w, int *h);
 
 /**
  * Get the size of a window's borders (decorations) around the client area, in
@@ -934,13 +940,15 @@ extern DECLSPEC int SDLCALL SDL_GetWindowBordersSize(SDL_Window *window, int *to
  * \param w a pointer to variable for storing the width in pixels, may be NULL
  * \param h a pointer to variable for storing the height in pixels, may be
  *          NULL
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_CreateWindow
  * \sa SDL_GetWindowSize
  */
-extern DECLSPEC void SDLCALL SDL_GetWindowSizeInPixels(SDL_Window *window, int *w, int *h);
+extern DECLSPEC int SDLCALL SDL_GetWindowSizeInPixels(SDL_Window *window, int *w, int *h);
 
 /**
  * Set the minimum size of a window's client area, in screen coordinates.
@@ -966,13 +974,15 @@ extern DECLSPEC int SDLCALL SDL_SetWindowMinimumSize(SDL_Window *window, int min
  *          NULL
  * \param h a pointer filled in with the minimum height of the window, may be
  *          NULL
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowMaximumSize
  * \sa SDL_SetWindowMinimumSize
  */
-extern DECLSPEC void SDLCALL SDL_GetWindowMinimumSize(SDL_Window *window, int *w, int *h);
+extern DECLSPEC int SDLCALL SDL_GetWindowMinimumSize(SDL_Window *window, int *w, int *h);
 
 /**
  * Set the maximum size of a window's client area, in screen coordinates.
@@ -998,13 +1008,15 @@ extern DECLSPEC int SDLCALL SDL_SetWindowMaximumSize(SDL_Window *window, int max
  *          NULL
  * \param h a pointer filled in with the maximum height of the window, may be
  *          NULL
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowMinimumSize
  * \sa SDL_SetWindowMaximumSize
  */
-extern DECLSPEC void SDLCALL SDL_GetWindowMaximumSize(SDL_Window *window, int *w, int *h);
+extern DECLSPEC int SDLCALL SDL_GetWindowMaximumSize(SDL_Window *window, int *w, int *h);
 
 /**
  * Set the border state of a window.
@@ -1017,12 +1029,14 @@ extern DECLSPEC void SDLCALL SDL_GetWindowMaximumSize(SDL_Window *window, int *w
  *
  * \param window the window of which to change the border state
  * \param bordered SDL_FALSE to remove border, SDL_TRUE to add border
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowFlags
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowBordered(SDL_Window *window, SDL_bool bordered);
+extern DECLSPEC int SDLCALL SDL_SetWindowBordered(SDL_Window *window, SDL_bool bordered);
 
 /**
  * Set the user-resizable state of a window.
@@ -1035,12 +1049,14 @@ extern DECLSPEC void SDLCALL SDL_SetWindowBordered(SDL_Window *window, SDL_bool
  *
  * \param window the window of which to change the resizable state
  * \param resizable SDL_TRUE to allow resizing, SDL_FALSE to disallow
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowFlags
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowResizable(SDL_Window *window, SDL_bool resizable);
+extern DECLSPEC int SDLCALL SDL_SetWindowResizable(SDL_Window *window, SDL_bool resizable);
 
 /**
  * Set the window to always be above the others.
@@ -1051,80 +1067,94 @@ extern DECLSPEC void SDLCALL SDL_SetWindowResizable(SDL_Window *window, SDL_bool
  * \param window The window of which to change the always on top state
  * \param on_top SDL_TRUE to set the window always on top, SDL_FALSE to
  *               disable
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetWindowFlags
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowAlwaysOnTop(SDL_Window *window, SDL_bool on_top);
+extern DECLSPEC int SDLCALL SDL_SetWindowAlwaysOnTop(SDL_Window *window, SDL_bool on_top);
 
 /**
  * Show a window.
  *
  * \param window the window to show
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_HideWindow
  * \sa SDL_RaiseWindow
  */
-extern DECLSPEC void SDLCALL SDL_ShowWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_ShowWindow(SDL_Window *window);
 
 /**
  * Hide a window.
  *
  * \param window the window to hide
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_ShowWindow
  */
-extern DECLSPEC void SDLCALL SDL_HideWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_HideWindow(SDL_Window *window);
 
 /**
  * Raise a window above other windows and set the input focus.
  *
  * \param window the window to raise
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  */
-extern DECLSPEC void SDLCALL SDL_RaiseWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_RaiseWindow(SDL_Window *window);
 
 /**
  * Make a window as large as possible.
  *
  * \param window the window to maximize
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_MinimizeWindow
  * \sa SDL_RestoreWindow
  */
-extern DECLSPEC void SDLCALL SDL_MaximizeWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_MaximizeWindow(SDL_Window *window);
 
 /**
  * Minimize a window to an iconic representation.
  *
  * \param window the window to minimize
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_MaximizeWindow
  * \sa SDL_RestoreWindow
  */
-extern DECLSPEC void SDLCALL SDL_MinimizeWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_MinimizeWindow(SDL_Window *window);
 
 /**
  * Restore the size and position of a minimized or maximized window.
  *
  * \param window the window to restore
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_MaximizeWindow
  * \sa SDL_MinimizeWindow
  */
-extern DECLSPEC void SDLCALL SDL_RestoreWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_RestoreWindow(SDL_Window *window);
 
 /**
  * Set a window's fullscreen state.
@@ -1222,13 +1252,15 @@ extern DECLSPEC int SDLCALL SDL_UpdateWindowSurfaceRects(SDL_Window *window, con
  *
  * \param window the window for which the input grab mode should be set
  * \param grabbed SDL_TRUE to grab input or SDL_FALSE to release input
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetGrabbedWindow
  * \sa SDL_GetWindowGrab
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window *window, SDL_bool grabbed);
+extern DECLSPEC int SDLCALL SDL_SetWindowGrab(SDL_Window *window, SDL_bool grabbed);
 
 /**
  * Set a window's keyboard grab mode.
@@ -1251,6 +1283,8 @@ extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window *window, SDL_bool grab
  *
  * \param window The window for which the keyboard grab mode should be set.
  * \param grabbed This is SDL_TRUE to grab keyboard, and SDL_FALSE to release.
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
@@ -1258,7 +1292,7 @@ extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_Window *window, SDL_bool grab
  * \sa SDL_SetWindowMouseGrab
  * \sa SDL_SetWindowGrab
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowKeyboardGrab(SDL_Window *window, SDL_bool grabbed);
+extern DECLSPEC int SDLCALL SDL_SetWindowKeyboardGrab(SDL_Window *window, SDL_bool grabbed);
 
 /**
  * Set a window's mouse grab mode.
@@ -1267,6 +1301,8 @@ extern DECLSPEC void SDLCALL SDL_SetWindowKeyboardGrab(SDL_Window *window, SDL_b
  *
  * \param window The window for which the mouse grab mode should be set.
  * \param grabbed This is SDL_TRUE to grab mouse, and SDL_FALSE to release.
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
@@ -1274,7 +1310,7 @@ extern DECLSPEC void SDLCALL SDL_SetWindowKeyboardGrab(SDL_Window *window, SDL_b
  * \sa SDL_SetWindowKeyboardGrab
  * \sa SDL_SetWindowGrab
  */
-extern DECLSPEC void SDLCALL SDL_SetWindowMouseGrab(SDL_Window *window, SDL_bool grabbed);
+extern DECLSPEC int SDLCALL SDL_SetWindowMouseGrab(SDL_Window *window, SDL_bool grabbed);
 
 /**
  * Get a window's input grab mode.
@@ -1521,13 +1557,15 @@ extern DECLSPEC int SDLCALL SDL_FlashWindow(SDL_Window *window, SDL_FlashOperati
  * the SDL error message to "Invalid window". See SDL_GetError().
  *
  * \param window the window to destroy
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_CreateWindow
  * \sa SDL_CreateWindowFrom
  */
-extern DECLSPEC void SDLCALL SDL_DestroyWindow(SDL_Window *window);
+extern DECLSPEC int SDLCALL SDL_DestroyWindow(SDL_Window *window);
 
 
 /**
@@ -1933,12 +1971,14 @@ extern DECLSPEC int SDLCALL SDL_GL_SwapWindow(SDL_Window *window);
  * Delete an OpenGL context.
  *
  * \param context the OpenGL context to be deleted
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
  *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GL_CreateContext
  */
-extern DECLSPEC void SDLCALL SDL_GL_DeleteContext(SDL_GLContext context);
+extern DECLSPEC int SDLCALL SDL_GL_DeleteContext(SDL_GLContext context);
 
 /* @} *//* OpenGL support functions */