Delphi : keydown与keypress的区别,组合键
发布时间:2020-12-15 09:53:13 所属栏目:大数据 来源:网络整理
导读:Shift 是一个集合变量。 type TShiftState = set of (ssShift,ssAlt,ssCtrl,ssLeft,ssRight,ssMiddle,ssDouble);也就是说TShiftstate类型有ssShift,ssLeft(鼠标左键),ssRight(鼠标右键),ssMiddle(鼠标中键),ssDouble (鼠标双击)Value MeaningssShift?
Shift 是一个集合变量。 type TShiftState = set of (ssShift,ssAlt,ssCtrl,ssLeft,ssRight,ssMiddle,ssDouble); 也就是说TShiftstate类型有ssShift,ssLeft(鼠标左键),ssRight(鼠标右键),ssMiddle(鼠标中键),ssDouble (鼠标双击) Value Meaning ssShift? ? ? ? ? ? ? The Shift key is held down. ssAlt? ? ? ? ? ? ? ? ? The Alt key is held down. ssCtrl? ? ? ? ? ? ? ? The Ctrl key is held down. ssLeft? ? ? ? ? ? ? ? The left mouse button is held down. ssRight? ? ? ? ? ? The right mouse button is held down. ssMiddle? ? ? ? ? ? The middle mouse button is held down. ssDouble? ? ? ? ? The mouse was double-clicked. 用来判断组合键中是否用shift、Ctrl、鼠标左键、右键、中键、双击事件。 Delphi中一些常用的组合键值 CTRL+A:#1 CTRL+B:#2 CTRL+C:#3 CTRL+D:#4 CTRL+E:#5 CTRL+F:#6 CTRL+G:#7 CTRL+H:#8 CTRL+I:#9 CTRL+J:#10 CTRL+K:#11 CTRL+L:#12 CR:#13 CTRL+N:#14 CTRL+O:#15 CTRL+P:#16 CTRL+Q:#17 CTRL+R:#18 CTRL+S:#19 CTRL+T:#20 CTRL+U:#21 CTRL+V:#22 CTRL+W:#23 CTRL+X:#24 CTRL+Y:#25 CTRL+Z:#26 ESC:#27 CTRL+:#28 CTRL+]:#29 SHIFT+CTRL+-:#30 DEL:#127 一般用在keydown、keyup、keypress事件中。 OnKeyDown和OnKeyUp事件中的Key是Word型的,表示用户按的是键盘上的哪个键,OnKeyPress中的Key是Char型,表示用户输入什么字符。一个产生8位(char)常规健值,一个产生16位(word)功能健健值。 1.KeyPress主要用来捕获数字(注意:包括Shift+数字的符号)、字母(注意:包括大小写)、小键盘等除了F1-12、SHIFT、Alt、Ctrl、Insert、Home、PgUp、Delete、End、PgDn、ScrollLock、Pause、NumLock、{菜单键}、{开始键}和方向键外的ANSI字符,KeyDown和KeyUp 通常可以捕获键盘除了PrScrn所有按键(这里不讨论特殊键盘的特殊键) 2.KeyPress 只能捕获单个字符 KeyDown 和KeyUp 可以捕获组合键。 3.KeyPress 可以捕获单个字符的大小写 4.KeyDown和KeyUp 对于单个字符捕获的KeyValue 都是一个值,也就是不能判断单个字符的大小写。 5.KeyPress 不区分小键盘和主键盘的数字字符。 KeyDown 和KeyUp 区分小键盘和主键盘的数字字符。 6.其中PrScrn 按键KeyPress、KeyDown和KeyUp 都不能捕获。 keydown是键盘按下任何键 keypress是键盘按下任何数字键和任何字母键 keydown 与keypress的声明格式差别很大 1 onkeydown事件 type TKeyEvent? =? procedure? (Sender:? TObject;? var? Key:? Word;? Shift:? TShiftState)? of? object; property? OnKeyDown:? TKeyEvent; 该事件在有任何键按下的时候,就发生。看!它响应的是Word类型,还能识别Shift键状态 2 onkeypress事件 type? TKeyPressEvent? =? procedure? (Sender:? TObject;? var? Key:? Char)? of? object; property? OnKeyPress:? TKeyPressEvent; 该事件响应的是字符类型Char,只能识别ASCII码,不能识别组合键和控制键和功能键。按下功能键、控制键不产生该事件,但产生OnkeyDown事件。 TWinControl与键盘相关的3个事件如下: OnKeyDown:键按下 OnKeyPress:有Ascii字符产生 OnKeyUp:键放开 其中OnKeyDown、OnKeyUp对任何按键都有响应,传入参数为 var? Key:? Word 键的扫描值 ? ? Shift:? TShiftState 表示控制键状态,包括键盘上的Ctrl、Shift、Alt和鼠标的左、中、右键及双击。 OnKeyPress事件只对Ascii有响应,传入参数为 var? Key:? Char Ascii字符 //例如F1-F10只有onKeydown有反应 另外TWincontrol.? KeyPreview:Boolean属性确定控件是否在子控件之前处理按键。 比如说enter键,onkeypress事件 if? key=#13? then? ? //当你按下enter键时触发该事件 do? something onkeydown事件 if? key=13? then? ? //当你按下enter键时触发该事件 do? something 其中所有的KeyDown事件里面应该用如下判断: if Key = VK_RETURN then ... 所有的KeyPress事件里面应该用如下判断: if Key = #13 then ... postmessage(self.handle,wm_keydown,vk_tab,0); keybd_event(VK_TAB,2,0,0); perform(WM_NEXTDLGCTL,0); SelectNext(ActiveControl,True,True); ... 但是显然用回车代码TAB显然不适合于BUTTON,你在它上面按回车的时候它会执行OnClick,所以不会TAB,你可以用别的键代替回车。 》》》》》》》》》》 键值 在keydown事件里面 showmessage(inttostr(key)); 在keypress事件里面 showmessage(key); 就知道了。 Form1.KeyPreview := True; procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState); begin Showmessage(IntToStr(Key)); end; procedure TForm1.FormKeyPress(Sender: TObject; var Key: Char); begin Showmessage(IntToStr(Ord(Key))); end; { Virtual Keys,Standard Set } {$EXTERNALSYM VK_LBUTTON} VK_LBUTTON = 1; {$EXTERNALSYM VK_RBUTTON} VK_RBUTTON = 2; {$EXTERNALSYM VK_CANCEL} VK_CANCEL = 3; {$EXTERNALSYM VK_MBUTTON} VK_MBUTTON = 4; { NOT contiguous with L & RBUTTON } {$EXTERNALSYM VK_BACK} VK_BACK = 8; {$EXTERNALSYM VK_TAB} VK_TAB = 9; {$EXTERNALSYM VK_CLEAR} VK_CLEAR = 12; {$EXTERNALSYM VK_RETURN} VK_RETURN = 13; {$EXTERNALSYM VK_SHIFT} VK_SHIFT = $10; {$EXTERNALSYM VK_CONTROL} VK_CONTROL = 17; {$EXTERNALSYM VK_MENU} VK_MENU = 18; {$EXTERNALSYM VK_PAUSE} VK_PAUSE = 19; {$EXTERNALSYM VK_CAPITAL} VK_CAPITAL = 20; {$EXTERNALSYM VK_KANA } VK_KANA = 21; {$EXTERNALSYM VK_HANGUL } VK_HANGUL = 21; {$EXTERNALSYM VK_JUNJA } VK_JUNJA = 23; {$EXTERNALSYM VK_FINAL } VK_FINAL = 24; {$EXTERNALSYM VK_HANJA } VK_HANJA = 25; {$EXTERNALSYM VK_KANJI } VK_KANJI = 25; {$EXTERNALSYM VK_CONVERT } VK_CONVERT = 28; {$EXTERNALSYM VK_NONCONVERT } VK_NONCONVERT = 29; {$EXTERNALSYM VK_ACCEPT } VK_ACCEPT = 30; {$EXTERNALSYM VK_MODECHANGE } VK_MODECHANGE = 31; {$EXTERNALSYM VK_ESCAPE} VK_ESCAPE = 27; {$EXTERNALSYM VK_SPACE} VK_SPACE = $20; {$EXTERNALSYM VK_PRIOR} VK_PRIOR = 33; {$EXTERNALSYM VK_NEXT} VK_NEXT = 34; {$EXTERNALSYM VK_END} VK_END = 35; {$EXTERNALSYM VK_HOME} VK_HOME = 36; {$EXTERNALSYM VK_LEFT} VK_LEFT = 37; {$EXTERNALSYM VK_UP} VK_UP = 38; {$EXTERNALSYM VK_RIGHT} VK_RIGHT = 39; {$EXTERNALSYM VK_DOWN} VK_DOWN = 40; {$EXTERNALSYM VK_SELECT} VK_SELECT = 41; {$EXTERNALSYM VK_PRINT} VK_PRINT = 42; {$EXTERNALSYM VK_EXECUTE} VK_EXECUTE = 43; {$EXTERNALSYM VK_SNAPSHOT} VK_SNAPSHOT = 44; {$EXTERNALSYM VK_INSERT} VK_INSERT = 45; {$EXTERNALSYM VK_DELETE} VK_DELETE = 46; {$EXTERNALSYM VK_HELP} VK_HELP = 47; { VK_0 thru VK_9 are the same as ASCII ’0’ thru ’9’ ($30 - $39) } { VK_A thru VK_Z are the same as ASCII ’A’ thru ’Z’ ($41 - $5A) } {$EXTERNALSYM VK_LWIN} VK_LWIN = 91; {$EXTERNALSYM VK_RWIN} VK_RWIN = 92; {$EXTERNALSYM VK_APPS} VK_APPS = 93; {$EXTERNALSYM VK_NUMPAD0} VK_NUMPAD0 = 96; {$EXTERNALSYM VK_NUMPAD1} VK_NUMPAD1 = 97; {$EXTERNALSYM VK_NUMPAD2} VK_NUMPAD2 = 98; {$EXTERNALSYM VK_NUMPAD3} VK_NUMPAD3 = 99; {$EXTERNALSYM VK_NUMPAD4} VK_NUMPAD4 = 100; {$EXTERNALSYM VK_NUMPAD5} VK_NUMPAD5 = 101; {$EXTERNALSYM VK_NUMPAD6} VK_NUMPAD6 = 102; {$EXTERNALSYM VK_NUMPAD7} VK_NUMPAD7 = 103; {$EXTERNALSYM VK_NUMPAD8} VK_NUMPAD8 = 104; {$EXTERNALSYM VK_NUMPAD9} VK_NUMPAD9 = 105; {$EXTERNALSYM VK_MULTIPLY} VK_MULTIPLY = 106; {$EXTERNALSYM VK_ADD} VK_ADD = 107; {$EXTERNALSYM VK_SEPARATOR} VK_SEPARATOR = 108; {$EXTERNALSYM VK_SUBTRACT} VK_SUBTRACT = 109; {$EXTERNALSYM VK_DECIMAL} VK_DECIMAL = 110; {$EXTERNALSYM VK_DIVIDE} VK_DIVIDE = 111; {$EXTERNALSYM VK_F1} VK_F1 = 112; {$EXTERNALSYM VK_F2} VK_F2 = 113; {$EXTERNALSYM VK_F3} VK_F3 = 114; {$EXTERNALSYM VK_F4} VK_F4 = 115; {$EXTERNALSYM VK_F5} VK_F5 = 116; {$EXTERNALSYM VK_F6} VK_F6 = 117; {$EXTERNALSYM VK_F7} VK_F7 = 118; {$EXTERNALSYM VK_F8} VK_F8 = 119; {$EXTERNALSYM VK_F9} VK_F9 = 120; {$EXTERNALSYM VK_F10} VK_F10 = 121; {$EXTERNALSYM VK_F11} VK_F11 = 122; {$EXTERNALSYM VK_F12} VK_F12 = 123; {$EXTERNALSYM VK_F13} VK_F13 = 124; {$EXTERNALSYM VK_F14} VK_F14 = 125; {$EXTERNALSYM VK_F15} VK_F15 = 126; {$EXTERNALSYM VK_F16} VK_F16 = 127; {$EXTERNALSYM VK_F17} VK_F17 = 128; {$EXTERNALSYM VK_F18} VK_F18 = 129; {$EXTERNALSYM VK_F19} VK_F19 = 130; {$EXTERNALSYM VK_F20} VK_F20 = 131; {$EXTERNALSYM VK_F21} VK_F21 = 132; {$EXTERNALSYM VK_F22} VK_F22 = 133; {$EXTERNALSYM VK_F23} VK_F23 = 134; {$EXTERNALSYM VK_F24} VK_F24 = 135; {$EXTERNALSYM VK_NUMLOCK} VK_NUMLOCK = 144; {$EXTERNALSYM VK_SCROLL} VK_SCROLL = 145; { VK_L & VK_R - left and right Alt,Ctrl and Shift virtual keys. Used only as parameters to GetAsyncKeyState() and GetKeyState(). No other API or message will distinguish left and right keys in this way. } {$EXTERNALSYM VK_LSHIFT} VK_LSHIFT = 160; {$EXTERNALSYM VK_RSHIFT} VK_RSHIFT = 161; {$EXTERNALSYM VK_LCONTROL} VK_LCONTROL = 162; {$EXTERNALSYM VK_RCONTROL} VK_RCONTROL = 163; {$EXTERNALSYM VK_LMENU} VK_LMENU = 164; {$EXTERNALSYM VK_RMENU} VK_RMENU = 165; {$EXTERNALSYM VK_PROCESSKEY} VK_PROCESSKEY = 229; {$EXTERNALSYM VK_ATTN} VK_ATTN = 246; {$EXTERNALSYM VK_CRSEL} VK_CRSEL = 247; {$EXTERNALSYM VK_EXSEL} VK_EXSEL = 248; {$EXTERNALSYM VK_EREOF} VK_EREOF = 249; {$EXTERNALSYM VK_PLAY} VK_PLAY = 250; {$EXTERNALSYM VK_ZOOM} VK_ZOOM = 251; {$EXTERNALSYM VK_NONAME} VK_NONAME = 252; {$EXTERNALSYM VK_PA1} VK_PA1 = 253; {$EXTERNALSYM VK_OEM_CLEAR} VK_OEM_CLEAR = 254; :),其实不用记,你不是用delphi吗,在ide里面输入vk_f1总会吧,然后按住ctrl键 单击刚才你输入的vk_f1,就会出来啦! 至于key:char的值,就是key:word的ascII码,你可以看chr(vk_f1),chr(vk_enter),都可以哈! 》》》》》》》》》》》》》》》》》》 delphi帮助里的虚拟键值表: vk_right right arrow key vk_down down arrow key vk_select select key vk_print print key (keyboard-specific) vk_execute execute key vk_snapshot print screen key vk_insert insert key vk_delete delete key vk_help help key vk_lwin left windows key (microsoft keyboard) vk_rwin right windows key (microsoft keyboard) vk_apps applications key (microsoft keyboard) vk_numpad0 0 key (numeric keypad) vk_numpad1 1 key (numeric keypad) vk_numpad2 2 key (numeric keypad) vk_numpad3 3 key (numeric keypad) vk_numpad4 4 key (numeric keypad) vk_numpad5 5 key (numeric keypad) vk_numpad6 6 key (numeric keypad) vk_numpad7 7 key (numeric keypad) vk_numpad8 8 key (numeric keypad) vk_numpad9 9 key (numeric keypad) vk_multiply multiply key (numeric keypad) vk_add add key (numeric keypad) vk_separator separator key (numeric keypad) vk_subtract subtract key (numeric keypad) vk_decimal decimal key (numeric keypad) vk_divide divide key (numeric keypad) vk_f1 f1 key vk_f2 f2 key vk_f3 f3 key vk_f4 f4 key vk_f5 f5 key vk_f6 f6 key vk_f7 f7 key vk_f8 f8 key vk_f9 f9 key vk_f10 f10 key vk_f11 f11 key vk_f12 f12 key vk_f13 f13 key vk_f14 f14 key vk_f15 f15 key vk_f16 f16 key vk_f17 f17 key vk_f18 f18 key vk_f19 f19 key vk_f20 f20 key vk_f21 f21 key vk_f22 f22 key vk_f23 f23 key vk_f24 f24 key vk_numlock num lock key vk_scroll scroll lock key vk_lshift left shift key (only used with getasynckeystate and getkeystate) vk_rshift right shift key (only used with getasynckeystate and getkeystate) vk_lcontrol left ctrl key (only used with getasynckeystate and getkeystate) vk_rcontrol right ctrl key (only used with getasynckeystate and getkeystate) vk_lmenu left alt key (only used with getasynckeystate and getkeystate) vk_rmenu right alt key (only used with getasynckeystate and getkeystate) vk_processkey process key vk_attn attn key vk_crsel crsel key vk_exsel exsel key vk_ereof erase eof key vk_play play key vk_zoom zoom key vk_noname reserved for future use vk_pa1 pa1 key vk_oem_clear clear key 模拟鼠标 鼠标移动(移动量dx,dy) mouse_event(MOUSEEVENTF_MOVE,dx,dy,0 ); 鼠标在(x,y)处按下或释放 setcursorpos(x,y); mouse_event(MOUSEEVENTF_LEFTDOWN,0 ); mouse_event(MOUSEEVENTF_RIGHTDOWN,0 ); mouse_event(MOUSEEVENTF_LEFTUP,0 ); mouse_event(MOUSEEVENTF_RIGHTUP,0 ); 鼠标双击由两次按下与释放来模拟 键盘模拟 一般虚拟键值(VK_)由KeyDown或keyup事件得到 特殊键值 Tab--9 Shift--16 Ctrl--17 Alt--18 CapsLock--20 Esc--27 Win--91,92 NumLock--144 ScrollLock--145 按下键 keybd_event(key,MapVirtualKey(key,0 ),KEYEVENTF_KEYUP,0 ); 释放键 keybd_event(key,0 ); 以上做法对大多数键有效,少数键要用到不同的值 》》》》》》》》》》》》》》》》》》》》》》》》》 常数名称? ? ? 十六进制值? ? 十进制值? ? 对应按键 VK_LBUTTON? ? ? ? ? 01? ? ? ? ? 1? ? ? ? 鼠标的左键 VK_RBUTTON? ? ? ? ? 02? ? ? ? ? 2? ? ? ? 鼠标的右键 VK-CANCEL? ? ? ? ? 03? ? ? ? ? 3? ? ? ? Ctrl+Break(通常不需要处理) VK_MBUTTON? ? ? ? ? 04? ? ? ? ? 4? ? ? ? 鼠标的中键(三按键鼠标) VK_BACK? ? ? ? ? ? 08? ? ? ? ? 8? ? ? ? Backspace键 VK_TAB? ? ? ? ? ? ? 09? ? ? ? ? 9? ? ? ? Tab键 VK_CLEAR? ? ? ? ? ? 0C? ? ? ? ? 12? ? ? Clear键(Num Lock关闭时的数字键盘5) VK_RETURN? ? ? ? ? 0D? ? ? ? ? 13? ? ? Enter键 VK_SHIFT? ? ? ? ? ? 10? ? ? ? ? 16? ? ? Shift键 VK_CONTROL? ? ? ? ? 11? ? ? ? ? 17? ? ? Ctrl键 VK_MENU? ? ? ? ? ? 12? ? ? ? ? 18? ? ? Alt键 VK_PAUSE? ? ? ? ? ? 13? ? ? ? ? 19? ? ? Pause键 VK_CAPITAL? ? ? ? ? 14? ? ? ? ? 20? ? ? Caps Lock键 VK_ESCAPE? ? ? ? ? 1B? ? ? ? ? 27? ? ? Ese键 VK_SPACE? ? ? ? ? ? 20? ? ? ? ? 32? ? ? Spacebar键 VK_PRIOR? ? ? ? ? ? 21? ? ? ? ? 33? ? ? Page Up键 VK_NEXT? ? ? ? ? ? 22? ? ? ? ? 34? ? ? Page Domw键 VK_END? ? ? ? ? ? ? 23? ? ? ? ? 35? ? ? End键 VK_HOME? ? ? ? ? ? 24? ? ? ? ? 36? ? ? Home键 VK_LEFT? ? ? ? ? ? 25? ? ? ? ? 37? ? ? LEFT ARROW 键(←) VK_UP? ? ? ? ? ? ? 26? ? ? ? ? 38? ? ? UP ARROW键(↑) VK_RIGHT? ? ? ? ? ? 27? ? ? ? ? 39? ? ? RIGHT ARROW键(→) VK_DOWN? ? ? ? ? ? 28? ? ? ? ? 40? ? ? DOWN ARROW键(↓) VK_Select? ? ? ? ? 29? ? ? ? ? 41? ? ? Select键 VK_PRINT? ? ? ? ? ? 2A? ? ? ? ? 42? ? VK_EXECUTE? ? ? ? ? 2B? ? ? ? ? 43? ? ? EXECUTE键 VK_SNAPSHOT? ? ? ? 2C? ? ? ? ? 44? ? ? Print Screen键(抓屏) VK_Insert? ? ? ? ? 2D? ? ? ? ? 45? ? ? Ins键(Num Lock关闭时的数字键盘0) VK_Delete? ? ? ? ? 2E? ? ? ? ? 46? ? ? Del键(Num Lock关闭时的数字键盘.) VK_HELP? ? ? ? ? ? 2F? ? ? ? ? 47? ? ? Help键 VK_0? ? 30? ? ? ? ? 48? ? ? 0键 VK_1? ? 31? ? ? ? ? 49? ? ? 1键 VK_2? ? 32? ? ? ? ? 50? ? ? 2键 VK_3? ? 33? ? ? ? ? 51? ? ? 3键 VK_4? ? 34? ? ? ? ? 52? ? ? 4键 VK_5? ? 35? ? ? ? ? 53? ? ? 5键 VK_6? ? 36? ? ? ? ? 54? ? ? 6键 VK_7? ? 37? ? ? ? ? 55? ? ? 7键 VK_8? ? 38? ? ? ? ? 56? ? ? 8键 VK_9? ? 39? ? ? ? ? 57? ? ? 9键 VK_A? ? 41? ? ? ? ? 65? ? ? A键 VK_B? ? 42? ? ? ? ? 66? ? ? B键 VK_C? ? 43? ? ? ? ? 67? ? ? C键 VK_D? ? 44? ? ? ? ? 68? ? ? D键 VK_E? ? 45? ? ? ? ? 69? ? ? E键 VK_F? ? 46? ? ? ? ? 70? ? ? F键 VK_G? ? 47? ? ? ? ? 71? ? ? G键 VK_H? ? 48? ? ? ? ? 72? ? ? H键 VK_I? ? 49? ? ? ? ? 73? ? ? I键 VK_J? ? 4A? ? ? ? ? 74? ? ? J键 VK_K? ? 4B? ? ? ? ? 75? ? ? K键 VK_L? ? 4C? ? ? ? ? 76? ? ? L键 VK_M? ? 4D? ? ? ? ? 77? ? ? M键 VK_N? ? 4E? ? ? ? ? 78? ? ? N键 VK_O? ? 4F? ? ? ? ? 79? ? ? O键 VK_P? ? 50? ? ? ? ? 80? ? ? P键 VK_Q? ? 51? ? ? ? ? 81? ? ? Q键 VK_R? ? 52? ? ? ? ? 82? ? ? R键 VK_S? ? 53? ? ? ? ? 83? ? ? S键 VK_T? ? 54? ? ? ? ? 84? ? ? T键 VK_U? ? 55? ? ? ? ? 85? ? ? U键 VK_V? ? 56? ? ? ? ? 86? ? ? V键 VK_W? ? 57? ? ? ? ? 87? ? ? W键 VK_X? ? 58? ? ? ? ? 88? ? ? X键 VK_Y? ? 59? ? ? ? ? 89? ? ? Y键 VK_Z? ? 5A? ? ? ? ? 90? ? ? Z键 VK_NUMPAD0? ? ? ? ? 60? ? ? ? ? 96? ? ? 数字键0键 VK_NUMPAD1? ? ? ? ? 61? ? ? ? ? 97? ? ? 数字键1键 VK_NUMPAD2? ? ? ? ? 62? ? ? ? ? 98? ? ? 数字键2键 VK_NUMPAD3? ? ? ? ? 62? ? ? ? ? 99? ? ? 数字键3键 VK_NUMPAD4? ? ? ? ? 64? ? ? ? ? 100? ? ? 数字键4键 VK_NUMPAD5? ? ? ? ? 65? ? ? ? ? 101? ? ? 数字键5键 VK_NUMPAD6? ? ? ? ? 66? ? ? ? ? 102? ? ? 数字键6键 VK_NUMPAD7? ? ? ? ? 67? ? ? ? ? 103? ? ? 数字键7键 VK_NUMPAD8? ? ? ? ? 68? ? ? ? ? 104? ? ? 数字键8键 VK_NUMPAD9? ? ? ? ? 69? ? ? ? ? 105? ? ? 数字键9键 VK_MULTIPLY? ? ? ? 6A? ? ? ? ? 106? ? ? 数字键盘上的*键 VK_ADD? ? ? ? ? ? ? 6B? ? ? ? ? 107? ? ? 数字键盘上的+键 VK_SEPARATOR? ? ? ? 6C? ? ? ? ? 108? ? ? Separator键 VK_SUBTRACT? ? ? ? 6D? ? ? ? ? 109? ? ? 数字键盘上的-键 VK_DECIMAL? ? ? ? ? 6E? ? ? ? ? 110? ? ? 数字键盘上的.键 VK_DIVIDE? ? ? ? ? 6F? ? ? ? ? 111? ? ? 数字键盘上的/键 VK_F1? 70? ? ? ? ? 112? ? ? F1键 VK_F2? 71? ? ? ? ? 113? ? ? F2键 VK_F3? 72? ? ? ? ? 114? ? ? F3键 VK_F4? 73? ? ? ? ? 115? ? ? F4键 VK_F5? 74? ? ? ? ? 116? ? ? F5键 VK_F6? 75? ? ? ? ? 117? ? ? F6键 VK_F7? 76? ? ? ? ? 118? ? ? F7键 VK_F8? 77? ? ? ? ? 119? ? ? F8键 VK_F9? 78? ? ? ? ? 120? ? ? F9键 VK_F10? 79? ? ? ? ? 121? ? ? F10键 VK_F11? 7A? ? ? ? ? 122? ? ? F11键 VK_F12? 7B? ? ? ? ? 123? ? ? F12键 VK_NUMLOCK? ? 90? ? ? ? ? 144? ? ? Num Lock 键 VK_SCROLL? ? ? 91? ? ? ? ? 145? ? ? Scroll Lock键 ? 上面没有提到的:(都在大键盘)? ? ? VK_LWIN? ? ? ? ? ? 91? ? ? 左win键 VK_RWIN? ? ? ? ? ? 92? ? ? 右win键 VK_APPS? ? ? ? ? ? 93? ? ? 右Ctrl左边键,点击相当于点击鼠标右键,会弹出快捷菜单 ? ? ? ? 186? ? ? ;(分号) ? ? ? ? 187? ? ? =键 ? ? ? ? 188? ? ?,键(逗号) ? ? ? ? 189? ? ? -键(减号) ? ? ? ? 190? ? ? .键(句号) ? ? ? ? 191? ? ? /键 ? ? ? ? 192? ? ? `键(Esc下面) ? ? ? ? 219? ? ? [键 ? ? ? ? 220? ? ? /键 ? ? ? ? 221? ? ? ]键 ? ? ? ? 222? ? ? ‘键(引号) procedure? TForm1.Edit1KeyDown(Sender:? TObject;? var? Key:? Word; ? ? ? Shift:? TShiftState); begin ? ? ? if? key=VK_DELETE? then ? ? ? ? key:=0; end; Delphi6.0,2000下通过Top 于在keydown中屏蔽掉除数字外的所有键 还应该允许Ctr+C/X/V,所以总结起来应该是: ? ? procedure? TForm1.Edit1KeyPress(Sender:? TObject;? var? Key:? Char); begin ? ? if? not? (Key? in? [‘0‘..‘9‘,? #3,? #22,? #24,? #8,? #13,? #45])? then? Key? :=? #0; end;? ? ? ? procedure? TForm1.Edit1KeyPress(Sender:? TObject;? var? Key:? Char); begin ? ? ? if? (key>#57)? and? (key<#48)? then ? ? ? ? ? key:=#0; end;? ? ? ? 我想你最好将你的例程写出来。 ? ? ? ? 如果是像CKEN阁下说的那样,你要将按键事件屏蔽的话,实际上应该是直接赋值: ? ? ? ? Key:=0;? ? ? ? ? (注意不是Key:=#0,因为这里的Key是Word类型,在keypress事件中,key的值是Char型,就要用“#”) ? ? ? ? Good? luck 在KeyDown里面就可以实现 if? key=vk_numpad0? then? (如果为小键盘的0键就干你想干的事情) 下面是小键盘的值 VK_NUMPAD0 0? key? (numeric? keypad) VK_NUMPAD1 1? key? (numeric? keypad) VK_NUMPAD2 2? key? (numeric? keypad) VK_NUMPAD3 3? key? (numeric? keypad) VK_NUMPAD4 4? key? (numeric? keypad) VK_NUMPAD5 5? key? (numeric? keypad) VK_NUMPAD6 6? key? (numeric? keypad) VK_NUMPAD7 7? key? (numeric? keypad) VK_NUMPAD8 8? key? (numeric? keypad) VK_NUMPAD9 9? key? (numeric? keypad) VK_MULTIPLY Multiply? key? (numeric? keypad) VK_ADD Add? key? (numeric? keypad) VK_SEPARATOR Separator? key (numeric? keypad) VK_SUBTRACT Subtract? key? (numeric? keypad) VK_DECIMAL Decimal? key? (numeric? keypad)? VK_DIVIDE Divide? key? (numeric? keypad) 》》》》》》》》》》》》》》》 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |