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(svn r27085) -Fix: Always return a valid window to the world generation gui code.

This commit is contained in:
alberth 2014-12-18 18:20:59 +00:00
parent edea2ce96d
commit 78896895cf
2 changed files with 7 additions and 4 deletions
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3
src/genworld_gui.cpp
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@ -837,7 +837,8 @@ static void _ShowGenerateLandscape(GenenerateLandscapeWindowMode mode)
if (!GetHeightmapDimensions(_file_to_saveload.name, &x, &y)) return;
}
GenerateLandscapeWindow *w = AllocateWindowDescFront<GenerateLandscapeWindow>((mode == GLWM_HEIGHTMAP) ? &_heightmap_load_desc : &_generate_landscape_desc, mode);
WindowDesc *desc = (mode == GLWM_HEIGHTMAP) ? &_heightmap_load_desc : &_generate_landscape_desc;
GenerateLandscapeWindow *w = AllocateWindowDescFront<GenerateLandscapeWindow>(desc, mode, true);
if (mode == GLWM_HEIGHTMAP) {
w->x = x;

8
src/window_gui.h
View File

@ -851,12 +851,14 @@ Window *FindWindowFromPt(int x, int y);
* @tparam Wcls %Window class to use if the window does not exist.
* @param desc The pointer to the WindowDesc to be created
* @param window_number the window number of the new window
* @return %Window pointer of the newly created window, or \c NULL.
* @param return_existing If set, also return the window if it already existed.
* @return %Window pointer of the newly created window, or the existing one if \a return_existing is set, or \c NULL.
*/
template <typename Wcls>
Wcls *AllocateWindowDescFront(WindowDesc *desc, int window_number)
Wcls *AllocateWindowDescFront(WindowDesc *desc, int window_number, bool return_existing = false)
{
if (BringWindowToFrontById(desc->cls, window_number)) return NULL;
Wcls *w = static_cast<Wcls *>(BringWindowToFrontById(desc->cls, window_number));
if (w != NULL) return return_existing ? w : NULL;
return new Wcls(desc, window_number);
}