SDL  2.0
SDL_messagebox.h File Reference
#include "SDL_stdinc.h"
#include "SDL_video.h"
#include "begin_code.h"
#include "close_code.h"
+ Include dependency graph for SDL_messagebox.h:
+ This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures

struct  SDL_MessageBoxButtonData
 Individual button data. More...
 
struct  SDL_MessageBoxColor
 RGB value used in a message box color scheme. More...
 
struct  SDL_MessageBoxColorScheme
 A set of colors to use for message box dialogs. More...
 
struct  SDL_MessageBoxData
 MessageBox structure containing title, text, window, etc. More...
 

Enumerations

enum  SDL_MessageBoxFlags {
  SDL_MESSAGEBOX_ERROR = 0x00000010,
  SDL_MESSAGEBOX_WARNING = 0x00000020,
  SDL_MESSAGEBOX_INFORMATION = 0x00000040
}
 SDL_MessageBox flags. If supported will display warning icon, etc. More...
 
enum  SDL_MessageBoxButtonFlags {
  SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT = 0x00000001,
  SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT = 0x00000002
}
 Flags for SDL_MessageBoxButtonData. More...
 
enum  SDL_MessageBoxColorType {
  SDL_MESSAGEBOX_COLOR_BACKGROUND,
  SDL_MESSAGEBOX_COLOR_TEXT,
  SDL_MESSAGEBOX_COLOR_BUTTON_BORDER,
  SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND,
  SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED,
  SDL_MESSAGEBOX_COLOR_MAX
}
 

Functions

int SDL_ShowMessageBox (const SDL_MessageBoxData *messageboxdata, int *buttonid)
 Create a modal message box. More...
 
int SDL_ShowSimpleMessageBox (Uint32 flags, const char *title, const char *message, SDL_Window *window)
 Create a simple modal message box. More...
 

Enumeration Type Documentation

◆ SDL_MessageBoxButtonFlags

Flags for SDL_MessageBoxButtonData.

Enumerator
SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT 

Marks the default button when return is hit

SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT 

Marks the default button when escape is hit

Definition at line 47 of file SDL_messagebox.h.

48 {
49  SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT = 0x00000001, /**< Marks the default button when return is hit */
50  SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT = 0x00000002 /**< Marks the default button when escape is hit */
SDL_MessageBoxButtonFlags
Flags for SDL_MessageBoxButtonData.

◆ SDL_MessageBoxColorType

Enumerator
SDL_MESSAGEBOX_COLOR_BACKGROUND 
SDL_MESSAGEBOX_COLOR_TEXT 
SDL_MESSAGEBOX_COLOR_BUTTON_BORDER 
SDL_MESSAGEBOX_COLOR_BUTTON_BACKGROUND 
SDL_MESSAGEBOX_COLOR_BUTTON_SELECTED 
SDL_MESSAGEBOX_COLOR_MAX 

Definition at line 71 of file SDL_messagebox.h.

◆ SDL_MessageBoxFlags

SDL_MessageBox flags. If supported will display warning icon, etc.

Enumerator
SDL_MESSAGEBOX_ERROR 

error dialog

SDL_MESSAGEBOX_WARNING 

warning dialog

SDL_MESSAGEBOX_INFORMATION 

informational dialog

Definition at line 37 of file SDL_messagebox.h.

38 {
39  SDL_MESSAGEBOX_ERROR = 0x00000010, /**< error dialog */
40  SDL_MESSAGEBOX_WARNING = 0x00000020, /**< warning dialog */
41  SDL_MESSAGEBOX_INFORMATION = 0x00000040 /**< informational dialog */
SDL_MessageBoxFlags
SDL_MessageBox flags. If supported will display warning icon, etc.

Function Documentation

◆ SDL_ShowMessageBox()

int SDL_ShowMessageBox ( const SDL_MessageBoxData messageboxdata,
int *  buttonid 
)

Create a modal message box.

Parameters
messageboxdataThe SDL_MessageBoxData structure with title, text, etc.
buttonidThe pointer to which user id of hit button should be copied.
Returns
-1 on error, otherwise 0 and buttonid contains user id of button hit or -1 if dialog was closed.
Note
This function should be called on the thread that created the parent window, or on the main thread if the messagebox has no parent. It will block execution of that thread until the user clicks a button or closes the messagebox.

Definition at line 3868 of file SDL_video.c.

References SDL_MessageBoxData::numbuttons, retval, SDL_CaptureMouse, SDL_FALSE, SDL_GetKeyboardFocus, SDL_GetRelativeMouseMode, SDL_GetWindowFlags(), SDL_InvalidParamError, SDL_MessageboxValidForDriver(), SDL_RaiseWindow(), SDL_ResetKeyboard(), SDL_SetError, SDL_SetRelativeMouseMode, SDL_ShowCursor, SDL_SYSWM_COCOA, SDL_SYSWM_UIKIT, SDL_SYSWM_WINDOWS, SDL_SYSWM_WINRT, SDL_SYSWM_X11, SDL_TRUE, SDL_WINDOW_MOUSE_CAPTURE, and SDL_VideoDevice::ShowMessageBox.

Referenced by SDL_ShowSimpleMessageBox().

3869 {
3870  int dummybutton;
3871  int retval = -1;
3872  SDL_bool relative_mode;
3873  int show_cursor_prev;
3874  SDL_bool mouse_captured;
3875  SDL_Window *current_window;
3876 
3877  if (!messageboxdata) {
3878  return SDL_InvalidParamError("messageboxdata");
3879  } else if (messageboxdata->numbuttons < 0) {
3880  return SDL_SetError("Invalid number of buttons");
3881  }
3882 
3883  current_window = SDL_GetKeyboardFocus();
3884  mouse_captured = current_window && ((SDL_GetWindowFlags(current_window) & SDL_WINDOW_MOUSE_CAPTURE) != 0);
3885  relative_mode = SDL_GetRelativeMouseMode();
3888  show_cursor_prev = SDL_ShowCursor(1);
3890 
3891  if (!buttonid) {
3892  buttonid = &dummybutton;
3893  }
3894 
3895  if (_this && _this->ShowMessageBox) {
3896  retval = _this->ShowMessageBox(_this, messageboxdata, buttonid);
3897  }
3898 
3899  /* It's completely fine to call this function before video is initialized */
3900 #if SDL_VIDEO_DRIVER_ANDROID
3901  if (retval == -1 &&
3902  Android_ShowMessageBox(messageboxdata, buttonid) == 0) {
3903  retval = 0;
3904  }
3905 #endif
3906 #if SDL_VIDEO_DRIVER_WINDOWS
3907  if (retval == -1 &&
3909  WIN_ShowMessageBox(messageboxdata, buttonid) == 0) {
3910  retval = 0;
3911  }
3912 #endif
3913 #if SDL_VIDEO_DRIVER_WINRT
3914  if (retval == -1 &&
3915  SDL_MessageboxValidForDriver(messageboxdata, SDL_SYSWM_WINRT) &&
3916  WINRT_ShowMessageBox(messageboxdata, buttonid) == 0) {
3917  retval = 0;
3918  }
3919 #endif
3920 #if SDL_VIDEO_DRIVER_COCOA
3921  if (retval == -1 &&
3922  SDL_MessageboxValidForDriver(messageboxdata, SDL_SYSWM_COCOA) &&
3923  Cocoa_ShowMessageBox(messageboxdata, buttonid) == 0) {
3924  retval = 0;
3925  }
3926 #endif
3927 #if SDL_VIDEO_DRIVER_UIKIT
3928  if (retval == -1 &&
3929  SDL_MessageboxValidForDriver(messageboxdata, SDL_SYSWM_UIKIT) &&
3930  UIKit_ShowMessageBox(messageboxdata, buttonid) == 0) {
3931  retval = 0;
3932  }
3933 #endif
3934 #if SDL_VIDEO_DRIVER_X11
3935  if (retval == -1 &&
3936  SDL_MessageboxValidForDriver(messageboxdata, SDL_SYSWM_X11) &&
3937  X11_ShowMessageBox(messageboxdata, buttonid) == 0) {
3938  retval = 0;
3939  }
3940 #endif
3941  if (retval == -1) {
3942  SDL_SetError("No message system available");
3943  }
3944 
3945  if (current_window) {
3946  SDL_RaiseWindow(current_window);
3947  if (mouse_captured) {
3949  }
3950  }
3951 
3952  SDL_ShowCursor(show_cursor_prev);
3953  SDL_SetRelativeMouseMode(relative_mode);
3954 
3955  return retval;
3956 }
#define SDL_SetRelativeMouseMode
#define SDL_GetKeyboardFocus
#define SDL_InvalidParamError(param)
Definition: SDL_error.h:54
void SDL_RaiseWindow(SDL_Window *window)
Raise a window above other windows and set the input focus.
Definition: SDL_video.c:2187
Uint32 SDL_GetWindowFlags(SDL_Window *window)
Get the window flags.
Definition: SDL_video.c:1741
static SDL_VideoDevice * _this
Definition: SDL_video.c:118
SDL_bool retval
#define SDL_GetRelativeMouseMode
static SDL_bool SDL_MessageboxValidForDriver(const SDL_MessageBoxData *messageboxdata, SDL_SYSWM_TYPE drivertype)
Definition: SDL_video.c:3849
int(* ShowMessageBox)(_THIS, const SDL_MessageBoxData *messageboxdata, int *buttonid)
Definition: SDL_sysvideo.h:303
SDL_bool
Definition: SDL_stdinc.h:161
#define SDL_SetError
The type used to identify a window.
Definition: SDL_sysvideo.h:73
void SDL_ResetKeyboard(void)
Definition: SDL_keyboard.c:572
#define SDL_CaptureMouse
#define SDL_ShowCursor

◆ SDL_ShowSimpleMessageBox()

int SDL_ShowSimpleMessageBox ( Uint32  flags,
const char *  title,
const char *  message,
SDL_Window window 
)

Create a simple modal message box.

Parameters
flagsSDL_MessageBoxFlags
titleUTF-8 title text
messageUTF-8 message text
windowThe parent window, or NULL for no parent
Returns
0 on success, -1 on error
See also
SDL_ShowMessageBox

Definition at line 3959 of file SDL_video.c.

References button, SDL_MessageBoxData::buttons, SDL_MessageBoxButtonData::flags, SDL_MessageBoxData::flags, SDL_MessageBoxData::message, NULL, SDL_MessageBoxData::numbuttons, SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, SDL_ShowMessageBox(), SDL_zero, SDL_MessageBoxButtonData::text, SDL_MessageBoxData::title, and SDL_MessageBoxData::window.

3960 {
3961 #ifdef __EMSCRIPTEN__
3962  /* !!! FIXME: propose a browser API for this, get this #ifdef out of here? */
3963  /* Web browsers don't (currently) have an API for a custom message box
3964  that can block, but for the most common case (SDL_ShowSimpleMessageBox),
3965  we can use the standard Javascript alert() function. */
3966  EM_ASM_({
3967  alert(UTF8ToString($0) + "\n\n" + UTF8ToString($1));
3968  }, title, message);
3969  return 0;
3970 #else
3973 
3974  SDL_zero(data);
3975  data.flags = flags;
3976  data.title = title;
3977  data.message = message;
3978  data.numbuttons = 1;
3979  data.buttons = &button;
3980  data.window = window;
3981 
3982  SDL_zero(button);
3985  button.text = "OK";
3986 
3987  return SDL_ShowMessageBox(&data, NULL);
3988 #endif
3989 }
const char * message
SDL_Texture * button
const char * title
SDL_Window * window
GLuint GLsizei const GLchar * message
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
Individual button data.
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
const SDL_MessageBoxButtonData * buttons
MessageBox structure containing title, text, window, etc.
#define NULL
Definition: begin_code.h:167
GLbitfield flags
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
int SDL_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
Create a modal message box.
Definition: SDL_video.c:3868