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Added SDL_GetCurrentVideoDisplay()

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402009
This commit is contained in:
Sam Lantinga 2006-08-02 03:20:52 +00:00
parent 8cff7eb76a
commit 7b00c63ef6
2 changed files with 29 additions and 10 deletions
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17
include/SDL_video.h
View file

@ -403,14 +403,25 @@ extern DECLSPEC int SDLCALL SDL_GetNumVideoDisplays(void);
*
* \brief Set the index of the currently selected display.
*
* \return The index of the currently selected display.
*
* \note You can query the currently selected display by passing an index of -1.
* \return 0 on success, or -1 if the index is out of range.
*
* \sa SDL_GetNumVideoDisplays()
* \sa SDL_GetCurrentVideoDisplay()
*/
extern DECLSPEC int SDLCALL SDL_SelectVideoDisplay(int index);
/**
* \fn int SDL_GetCurrentVideoDisplay(void)
*
* \brief Get the index of the currently selected display.
*
* \return The index of the currently selected display.
*
* \sa SDL_GetNumVideoDisplays()
* \sa SDL_SelectVideoDisplay()
*/
extern DECLSPEC int SDLCALL SDL_GetCurrentVideoDisplay(void);
/**
* \fn int SDL_GetNumDisplayModes(void)
*

22
src/video/SDL_video.c
View file

@ -355,13 +355,21 @@ SDL_SelectVideoDisplay(int index)
SDL_UninitializedVideo();
return (-1);
}
if (index >= 0) {
if (index >= _this->num_displays) {
SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
return -1;
}
_this->current_display = index;
if (index < 0 || index >= _this->num_displays) {
SDL_SetError("index must be in the range 0 - %d",
_this->num_displays - 1);
return -1;
}
_this->current_display = index;
return 0;
}
int
SDL_GetCurrentVideoDisplay(void)
{
if (!_this) {
SDL_UninitializedVideo();
return (-1);
}
return _this->current_display;
}