Mercurial > sdl-ios-xcode
annotate docs/man3/SDL_keysym.3 @ 3097:0d12e8f1de3c
Date: Thu, 05 Feb 2009 18:07:35 +0100
From: Stefan Klug
Subject: [SDL] SDL 1.3 WinCE backend
as promised, I've started to work on the WinCE backend of SDL 1.3
I've modified the win32 video backend and the gdi renderer, to work
properly in WinCE.
The results till now are great, but there is still some work to do.
Attached are two patches with my changes.
I would be happy if someone could review and propably commit them.
The first one (configure.in.patch) should be straight forward without
any side effects.
The second one does the necessary changes to the win32 backend. I was
really unhappy to start slicing this shiny new backend with
#ifdef/#endif but I saw no other option.
The most problematic issues are:
- WinCe has no GetDIBits, so its practically impossible to fill a
BITMAPINFO with correct values. I therefore removed the bmi member from
the GDI_RenderData in SDL_gdirender.c to prevent usage of a not or not
properly initialized bmi.
- In SDL_win32window.c I exchanged some ASCII function by their general
counterparts, (In CE only the Unicode versions are available). I don't
know if this has a negative effect when running in win32
Cheers
Stefan
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 23 Mar 2009 05:35:21 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
| rev | line source |
|---|---|
|
181
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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1 .TH "SDL_keysym" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" |
| 0 | 2 .SH "NAME" |
|
2283
546f7c1eb755
Merged revision 3472 from SDL 1.2, fixing bug #493
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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3 SDL_keysym \- Keysym structure |
| 0 | 4 .SH "STRUCTURE DEFINITION" |
| 5 .PP | |
| 6 .nf | |
| 7 \f(CWtypedef struct{ | |
| 8 Uint8 scancode; | |
| 9 SDLKey sym; | |
| 10 SDLMod mod; | |
| 11 Uint16 unicode; | |
| 12 } SDL_keysym;\fR | |
| 13 .fi | |
| 14 .PP | |
| 15 .SH "STRUCTURE DATA" | |
| 16 .TP 20 | |
| 17 \fBscancode\fR | |
| 18 Hardware specific scancode | |
| 19 .TP 20 | |
| 20 \fBsym\fR | |
| 21 SDL virtual keysym | |
| 22 .TP 20 | |
| 23 \fBmod\fR | |
| 24 Current key modifiers | |
| 25 .TP 20 | |
| 26 \fBunicode\fR | |
| 27 Translated character | |
| 28 .SH "DESCRIPTION" | |
| 29 .PP | |
| 30 The \fBSDL_keysym\fR structure is used by reporting key presses and releases since it is a part of the \fI\fBSDL_KeyboardEvent\fR\fR\&. | |
| 31 .PP | |
| 32 The \fBscancode\fR field should generally be left alone, it is the hardware dependent scancode returned by the keyboard\&. The \fBsym\fR field is extremely useful\&. It is the SDL-defined value of the key (see \fISDL Key Syms\fR\&. This field is very useful when you are checking for certain key presses, like so: | |
| 33 .PP | |
| 34 .nf | |
| 35 \f(CW\&. | |
| 36 \&. | |
| 37 while(SDL_PollEvent(&event)){ | |
| 38 switch(event\&.type){ | |
| 39 case SDL_KEYDOWN: | |
| 40 if(event\&.key\&.keysym\&.sym==SDLK_LEFT) | |
| 41 move_left(); | |
| 42 break; | |
| 43 \&. | |
| 44 \&. | |
| 45 \&. | |
| 46 } | |
| 47 } | |
| 48 \&. | |
| 49 \&.\fR | |
| 50 .fi | |
| 51 .PP | |
| 52 \fBmod\fR stores the current state of the keyboard modifiers as explained in \fI\fBSDL_GetModState\fP\fR\&. The \fBunicode\fR is only used when UNICODE translation is enabled with \fI\fBSDL_EnableUNICODE\fP\fR\&. If \fBunicode\fR is non-zero then this a the UNICODE character corresponding to the keypress\&. If the high 9 bits of the character are 0, then this maps to the equivalent ASCII character: | |
| 53 .PP | |
| 54 .nf | |
| 55 \f(CWchar ch; | |
| 56 if ( (keysym\&.unicode & 0xFF80) == 0 ) { | |
| 57 ch = keysym\&.unicode & 0x7F; | |
| 58 } | |
| 59 else { | |
| 60 printf("An International Character\&. | |
| 61 "); | |
| 62 }\fR | |
| 63 .fi | |
| 64 .PP | |
| 65 UNICODE translation does have a slight overhead so don\&'t enable it unless its needed\&. | |
| 66 .SH "SEE ALSO" | |
| 67 .PP | |
| 68 \fI\fBSDLKey\fR\fR | |
|
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Updated from the SDL Documentation Project
Sam Lantinga <slouken@libsdl.org>
parents:
55
diff
changeset
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69 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00 |