SetWindowsHookEx回调函数 ( 积分: 30 )

Angell1124 · 2005-04-05

在使用SetWindowsHookEx中使用的回调函数中的wParam和lParam中的类型可以赋给什么类型和它们的具体含意。谢谢，本人分数不多。

Angell1124 · 2005-04-05

在使用SetWindowsHookEx中使用的回调函数中的wParam和lParam中的类型可以赋给什么类型和它们的具体含意。谢谢，本人分数不多。

hxb_leiyuan · 2005-04-05

看看这个例子 http://www.2ccc.com/article.asp?articleid=1845

someset · 2005-04-05

HOOK类型很多，不知你用哪一种，全说须大篇幅 MSDN中有 找Win32 Hooks 再找你用的那一种

Angell1124 · 2005-04-05

我说的是直接用setwindowshookex设置钩子，然后在这个函数里不是要用到一个回调函数吗，我想怎么把wparam和lparam读出来但不知道怎么设置类型来读这个。我设的是键盘钩子具体说一下。

someset · 2005-04-05

From MSDN: code Specifies a code the hook procedure uses to determine how to process the message. This parameter can be one of the following values: Value Meaning HC_ACTION The wParam and lParam parameters contain information about a keystroke message. HC_NOREMOVE The wParam and lParam parameters contain information about a keystroke message, and the keystroke message has not been removed from the message queue. (An application called the PeekMessage function, specifying the PM_NOREMOVE flag.) If code is less than zero, the hook procedure must pass the message to the CallNextHookEx function without further processing and should return the value returned by CallNextHookEx. wParam Specifies the virtual-key code of the key that generated the keystroke message. lParam Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag. This parameter can be a combination of the following values: Value Description 0–15 Specifies the repeat count. The value is the number of times the keystroke is repeated as a result of the user's holding down the key. 16–23 Specifies the scan code. The value depends on the original equipment manufacturer (OEM). 24 Specifies whether the key is an extended key, such as a function key or a key on the numeric keypad. The value is 1 if the key is an extended key; otherwise, it is 0. 25–28 Reserved. 29 Specifies the context code. The value is 1 if the alt key is down; otherwise, it is 0. 30 Specifies the previous key state. The value is 1 if the key is down before the message is sent; it is 0 if the key is up. 31 Specifies the transition state. The value is 0 if the key is being pressed and 1 if it is being released.

Angell1124 · 2005-04-06

谁给我一份setwindowshookex回调函数中aParam的转换函数。设的是键盘钩子，我想得到我按下的是什么键。

hxb_leiyuan · 2005-04-06

下载 http://www.2ccc.com/article.asp?articleid=2067 由于匆忙，这个包中带的控件有点问题，我更新了。升级后的控件明天可以下载了。

someset · 2005-04-06

干嘛要转换啊 查一查Windows头文件  {$EXTERNALSYM VK_LBUTTON}  VK_LBUTTON = 1;  {$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;

Angell1124 · 2005-04-07

谢谢各位，但hxb_leiyuan的控件我好像下不了了。

Angell1124 · 2005-04-07

hxb_leiyuan someset 我都加分了。谢谢。

SetWindowsHookEx回调函数 ( 积分: 30 )

Angell1124

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