Mercurial > sdl-ios-xcode
view docs/man3/SDL_MouseButtonEvent.3 @ 4168:69bcba65c388 SDL-1.2
Fixed bug #526
Comment #1 From Simon Howard 2009-03-20 16:50:56
Hi,
I'm the author of Chocolate Doom, one of the other source ports that James
mentioned. This is a patch against the current SVN version of SDL 1.2 that
fixes the bug. It has been tested and hopefully should be obviously correct
from examining the changes. I'll give a brief explanation.
When the palette is set with SDL_SetPalette, the IDirectDrawPalette_SetEntries
DirectX function is invoked. However, when this happens, a WM_PALETTECHANGED
message is sent to the window.
A WM_PALETTECHANGED message can also be received if the palette is changed for
some other reason, like if the system palette is changed. Therefore, the
palette change handler (DX5_PaletteChanged) has code to deal with this case.
It distinguishes "expected" palette changes (set with SDL_SetPalette) from
"unexpected" palette changes using the colorchange_expected variable, which is
set before calling IDirectDrawPalette_SetEntries. However, the code to set
this variable is missing in the fullscreen code path. By setting this
variable, the palette change is handled properly and the freezes go away.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 13 Apr 2009 00:53:12 +0000 |
parents | 4e3b250c950e |
children | 1238da4a7112 |
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.TH "SDL_MouseButtonEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" .SH "NAME" SDL_MouseButtonEvent \- Mouse button event structure .SH "STRUCTURE DEFINITION" .PP .nf \f(CWtypedef struct{ Uint8 type; Uint8 button; Uint8 state; Uint16 x, y; } SDL_MouseButtonEvent;\fR .fi .PP .SH "STRUCTURE DATA" .TP 20 \fBtype\fR \fBSDL_MOUSEBUTTONDOWN\fP or \fBSDL_MOUSEBUTTONUP\fP .TP 20 \fBbutton\fR The mouse button index (SDL_BUTTON_LEFT, SDL_BUTTON_MIDDLE, SDL_BUTTON_RIGHT) .TP 20 \fBstate\fR \fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP .TP 20 \fBx\fR, \fBy\fR The X/Y coordinates of the mouse at press/release time .SH "DESCRIPTION" .PP \fBSDL_MouseButtonEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_MOUSEBUTTONDOWN\fP or \fBSDL_MOUSEBUTTONUP\fP is reported\&. .PP When a mouse button press or release is detected then number of the button pressed (from 1 to 255, with 1 usually being the left button and 2 the right) is placed into \fBbutton\fR, the position of the mouse when this event occured is stored in the \fBx\fR and the \fBy\fR fields\&. Like \fI\fBSDL_KeyboardEvent\fR\fR, information on whether the event was a press or a release event is stored in both the \fBtype\fR and \fBstate\fR fields, but this should be obvious\&. .SH "SEE ALSO" .PP \fI\fBSDL_Event\fR\fR, \fI\fBSDL_MouseMotionEvent\fR\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59