RE: [GD-Windows] Asian language support (IME)

[Daniel V. <vo...@ep...>]

I forgot a small snippet in my original email.

Before destroying your window you want to do something like below:

HIMC hImc = ImmGetContext( Window->hWnd );
if( hImc )
{
	ImmAssociateContext( Window->hWnd, NULL );
	ImmDestroyContext( hImc );
}

Thanks to Andy Glaister for pointing it out :)

-- Daniel, Epic Games Inc.

> -----Original Message-----
> From: gam...@li...
> [mailto:gam...@li...]On Behalf Of
> Daniel Vogel
> Sent: Friday, October 25, 2002 1:01 AM
> To: gam...@li...
> Subject: [GD-Windows] Asian language support (IME)
>
>
> As I couldn't find much useful documentation/ examples when I was looking
> for a way to add Asian language support to our input code I
> thought I should
> post what works for us now so other people might have it easier than I did
> :)
>
> The below snippet should work fine with Japanese, Chinese and
> Korean Windows
> (even Win98) though YMMV.
>
> BTW, as a little hint - make sure you have your Korean keyboard plugged in
> before installing Korean Windows if you don't speak the language as
> otherwise you won't be able to use the IME key... had to learn
> that the hard
> way ;)
>
>
> Some globals.
>
> INT	SupportsIME,
> 	CurrentIMESize;
>
>
> After creating the window.
>
> HIMC hImc = ImmGetContext( Window->hWnd );
> if( !hImc )
> {
> 	debugf(TEXT("Creating IME context."));
> 	hImc = ImmCreateContext();
> 	if( hImc )
> 		ImmAssociateContext( Window->hWnd, hImc );
> 	else
> 		debugf(TEXT("OS doesn't support IME."));
> }
> else
> 	ImmReleaseContext( Window->hWnd, hImc );
>
> SupportsIME = hImc != NULL;
>
>
>
> Once per frame (could possibly be done by handling some message
> but I didn't
> have time to look into this closer and hey, it works ;)).
>
> // IME stuff.
> if( SupportsIME )
> {
> 	HIMC hImc = ImmGetContext( Window->hWnd );
> 	if( !hImc )
> 	{
> 		debugf(TEXT("Creating IME context."));
> 		hImc = ImmCreateContext();
> 		if( hImc )
> 			ImmAssociateContext( Window->hWnd, hImc );
> 		else
> 			SupportsIME = 0;
>
> 		CurrentIMESize = 0;
> 	}
> 	else
> 		ImmReleaseContext( Window->hWnd, hImc );
> }
>
>
>
> Below is some code that handles the IME windows message.
>
>
> case WM_IME_COMPOSITION:
> {
> 	// Final composition string.
> 	if( lParam & GCS_RESULTSTR )
> 	{
> 		HIMC hImc = ImmGetContext(Window->hWnd);
>
> 		if( !hImc )
> 			appErrorf( TEXT("No IME context") );
>
> 		// Get the size of the result string.
> 		INT Size = ImmGetCompositionString( hImc,
> GCS_RESULTSTR, NULL, 0 );
>
> 		TCHAR* String = new TCHAR[Size+1];
> 		appMemzero( String, sizeof(TCHAR) * (Size+1) );
>
> 		// Get the result strings that is generated by IME.
> 		Size = ImmGetCompositionString( hImc,
> GCS_RESULTSTR, String, Size );
> 		Size /= sizeof( TCHAR );
>
> 		// Send backspaces.
> 		for( INT i=0; i<CurrentIMESize; i++ )
> 		{
> 			CauseInputEvent( IK_Backspace, IST_Press );
> 			CauseInputEvent( IK_Backspace, IST_Release );
> 		}
>
> 		// Send key to input system.
> 		for( INT i=0; i<Size; i++ )
> 		{
> 			INT Key = String[i];
> 			if( Key )
> 				Client->Engine->Key( this,
> IK_Unicode, String[i] );
> 		}
>
> 		delete [] String;
>
> 		ImmReleaseContext(Window->hWnd, hImc);
>
> 		CurrentIMESize = 0;
> 	}
> 	// Composition in progress.
> 	else if( lParam & GCS_COMPSTR )
> 	{
> 		HIMC hImc = ImmGetContext(Window->hWnd);
>
> 		if( !hImc )
> 			appErrorf( TEXT("No IME context") );
>
> 		// Get the size of the result string.
> 		INT Size = ImmGetCompositionString( hImc,
> GCS_COMPSTR, NULL, 0 );
>
> 		TCHAR* String = new TCHAR[Size+1];
> 		appMemzero( String, sizeof(TCHAR) * (Size+1) );
>
> 		// Get the result strings that is generated by IME.
> 		Size = ImmGetCompositionString( hImc, GCS_COMPSTR,
> String, Size );
> 		Size /= sizeof( TCHAR );
>
> 		// Send backspaces.
> 		for( INT i=0; i<CurrentIMESize; i++ )
> 		{
> 			CauseInputEvent( IK_Backspace, IST_Press );
> 			CauseInputEvent( IK_Backspace, IST_Release );
> 		}
>
> 		// Send key to input system
> 		for( INT i=0; i<Size; i++ )
> 		{
> 			INT Key = String[i];
> 			if( Key )
> 				Client->Engine->Key( this,
> IK_Unicode, String[i] );
> 		}
>
> 		delete [] String;
>
> 		ImmReleaseContext(Window->hWnd, hImc);
>
> 		CurrentIMESize = Size;
> 	}
> 	else
> 		return DefWindowProcX( Window->hWnd, iMessage,
> wParam, lParam );
>
> 	return 0;
> }
>
>
> You only want IME stuff for chatting and not for controlling the player so
> here's some code that toggles it on the fly.
>
> InParamter: bool Enable
>
> if( SupportsIME )
> {
> 	if( !Enable )
> 	{
> 		ImmAssociateContext( Window->hWnd, NULL );
> 		CurrentIMESize	= 0;
> 	}
> 	else
> 	{
> 		HIMC hImc = ImmGetContext( Window->hWnd );
> 		if( !hImc )
> 		{
> 			debugf(TEXT("Creating IME context."));
> 			hImc = ImmCreateContext();
> 			if( hImc )
> 				ImmAssociateContext( Window->hWnd, hImc );
> 			else
> 				SupportsIME = 0;
>
> 			CurrentIMESize	= 0;
> 		}
> 		else
> 		{
> 			ImmAssociateContext( Window->hWnd, hImc );
> 			ImmReleaseContext( Window->hWnd, hImc );
> 		}
> 	}
> }
>
>
> Hope this of help to someone out there :)
>
> -- Daniel, Epic Games Inc.
>
>
>
> -------------------------------------------------------
> This sf.net email is sponsored by: Influence the future
> of Java(TM) technology. Join the Java Community
> Process(SM) (JCP(SM)) program now.
> http://ads.sourceforge.net/cgi-bin/redirect.pl?sunm0004en
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_id=555
>