Mercurial > sdl-ios-xcode
view docs/man3/SDL_GetKeyState.3 @ 3191:91b335df6fc8
Fixed bug #750
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 Jun 2009 14:00:21 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_GetKeyState" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference" .SH "NAME" SDL_GetKeyState \- Get a snapshot of the current keyboard state .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBUint8 *\fBSDL_GetKeyState\fP\fR(\fBint *numkeys\fR); .SH "DESCRIPTION" .PP Gets a snapshot of the current keyboard state\&. The current state is return as a pointer to an array, the size of this array is stored in \fBnumkeys\fR\&. The array is indexed by the \fI\fBSDLK_*\fP\fR symbols\&. A value of 1 means the key is pressed and a value of 0 means its not\&. The pointer returned is a pointer to an internal SDL array and should not be freed by the caller\&. .PP .RS \fBNote: .PP Use \fI\fBSDL_PumpEvents\fP\fR to update the state array\&. .RE .SH "EXAMPLE" .PP .PP .nf \f(CWUint8 *keystate = SDL_GetKeyState(NULL); if ( keystate[SDLK_RETURN] ) printf("Return Key Pressed\&. ");\fR .fi .PP .SH "SEE ALSO" .PP \fI\fBSDL Key Symbols\fP\fR, \fI\fBSDL_PumpEvents\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59