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130 lines
2.9 KiB
ObjectPascal
130 lines
2.9 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Florian Klaempfl
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member of the Free Pascal development team
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Keyboard unit for OS/2
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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unit Keyboard;
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interface
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{$i keybrdh.inc}
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implementation
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uses
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KbdCalls, DosCalls;
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{$i keyboard.inc}
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const
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DefaultKeyboard = 0;
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Handle: word = DefaultKeyboard;
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procedure SysInitKeyboard;
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var
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K: TKbdInfo;
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begin
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if KbdGetFocus (IO_Wait, DefaultKeyboard) = No_Error then
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begin
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if KbdOpen (Handle) <> No_Error then
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Handle := DefaultKeyboard;
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KbdFlushBuffer (Handle);
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KbdFreeFocus (DefaultKeyboard);
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KbdGetFocus (IO_Wait, Handle);
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K.cb := SizeOf (K);
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KbdGetStatus (K, Handle);
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K.fsMask := $14;
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KbdSetStatus (K, Handle);
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end;
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end;
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procedure SysDoneKeyboard;
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begin
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KbdFreeFocus (Handle);
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if KbdGetFocus (IO_Wait, DefaultKeyboard) = No_Error then
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begin
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KbdClose (Handle);
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Handle := DefaultKeyboard;
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KbdFreeFocus (DefaultKeyboard);
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end;
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end;
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function SysGetKeyEvent: TKeyEvent;
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var
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K: TKbdKeyInfo;
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begin
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KbdGetFocus (IO_Wait, Handle);
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while (KbdCharIn (K, IO_NoWait, Handle) <> No_Error)
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or (K.fbStatus and $41 <> $40) do
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DosSleep (5);
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with K do
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begin
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if (byte (chChar) = $E0) and (fbStatus and 2 <> 0) then chChar := #0;
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SysGetKeyEvent := cardinal ($0300 or fsState and $F) shl 16 or
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cardinal (byte (chScan)) shl 8 or byte (chChar);
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end;
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end;
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function SysPollKeyEvent: TKeyEvent;
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var
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K: TKbdKeyInfo;
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Key : TKeyEvent;
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begin
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Key:=0;
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KbdGetFocus (IO_NoWait, Handle);
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if (KbdPeek (K, Handle) <> No_Error) or
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(K.fbStatus and $40 = 0) then
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FillChar (K, SizeOf (K), 0)
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else
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with K do
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begin
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if (byte (chChar) = $E0) and (fbStatus and 2 <> 0) then
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chChar := #0;
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Key:= cardinal ($0300 or fsState and $F) shl 16 or
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cardinal (byte (chScan)) shl 8 or byte (chChar);
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end;
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if (Key and $FFFF)=0 then
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Key := 0;
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SysPollKeyEvent:=Key;
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end;
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function SysGetShiftState: Byte;
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var
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K: TKbdInfo;
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begin
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KbdGetFocus (IO_NoWait, Handle);
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K.cb := SizeOf (K);
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if KbdGetStatus (K, Handle) = No_Error then
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SysGetShiftState := (K.fsState and $F)
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else
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SysGetShiftState := 0;
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end;
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Const
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SysKeyboardDriver : TKeyboardDriver = (
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InitDriver : @SysInitKeyBoard;
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DoneDriver : @SysDoneKeyBoard;
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GetKeyevent : @SysGetKeyEvent;
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PollKeyEvent : @SysPollKeyEvent;
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GetShiftState : @SysGetShiftState;
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TranslateKeyEvent : Nil;
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TranslateKeyEventUnicode : Nil;
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);
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begin
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SetKeyBoardDriver(SysKeyBoardDriver);
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SetKbdCtrlBreakHandler;
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end.
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