创建一个窗口，里面有一个button控件，当点击botton时，d出另外一个窗口，怎么实现

VC++中，按钮属于CButton类，它继承自CWnd这个窗口基类。

Button控件的Disable属性是指使按钮变成灰色，即失效。由于按钮属于一种窗口，也就是窗口失效。在CWnd中有如下成员函数：

   BOOL bEnable = TRUE 

);

  微软帮助文档给出的说明主要意思为:如果参数为TRUE(默认)，则窗口有效，为FALSE窗口失效。该函数调用会返回之前窗口的状态。

   对于指定的按钮控件 ，可以自己指定它的 ID 或  用系统的  默认ID  这时使用 CWnd::GetDlgItem根据这个ID可以获取按钮(实际是CWnd)的指针。此时直接使用该指针调用CWnd的EnableWindow函数参数为FALSE,如下:

   GetDlgItem(按钮ID) -> EnableWindow( FALSE );

   //在按钮对应对话框的窗口类中这    

   //样用,不是对应的窗口类，要先获取按钮所属的窗口

注意按钮CButton类的SetState并不能使按钮失效，而是模拟鼠标单击消息，该函数调用结束会恢复原始状态，即瞬间状态，之后会恢复原来状态。如:

   reinterpret_cast<CButton>( 按钮ID ) ->SetState( 1 );

 //只是暂时设置为按下(不是失效)，此时会发送WM_LBUTTONDOWN消息，该函数调用结 //束就会像松开鼠标的按钮一样

GetDlgItem有多个重载版本，注意调用方式。

如Win32版本的:

HWND hButton;

::GetDlgItem( hButton , 按钮ID );//获取按钮句柄

::EnableWindow( hButton , FALSE );//设置按钮为无效

你需要使用下面的API函数，并建立一个需要检测的按键 List。

把检测按键放到 Timer 里面每秒检测 30 次以上就能监听全局按键。

API函数

/// <summary>

/// GetAsyncKeyState函数返回的是指定虚拟键瞬时的状态值，它有四种返回值：

///<para></para>0---键未被按下，而且键也未被按过（自上次调用GetAsyncKeyState后）；

///<para></para>1---键抬起瞬间，在此之前键曾经被按过；

///<para></para>-32768（即16进制数&H8000） --- 键按下瞬间，但在此之前键未被按过；

///<para></para>-32767（即16进制数&H8001） --- 键按下持续，在此之前键也曾经被按过。

/// </summary>

[SystemRuntimeInteropServicesDllImport("user32dll")]

public static extern int GetAsyncKeyState ( int vKey );

/// <summary>GetCursorPos函数返回鼠标位置</summary>

[SystemRuntimeInteropServicesDllImport("user32dll")]

public static extern int GetCursorPos (ref MOUSEPOINT lpPoint );

/// <summary>返回指定虚拟码的按键状态。

/// <para>参见〈<see cref="EKeyState"/>〉</para>

/// </summary>

public int 获取按键状态 ( int 键) { return GetAsyncKeyState(键); }

/// <summary>获取并返回鼠标位置</summary>

public MOUSEPOINT 鼠标位置() {

MOUSEPOINT p = new MOUSEPOINT();

var k = 0;

k = GetCursorPos(ref p);

return p;

}

/// <summary>表示鼠标在屏幕位置的结构,为了使用API函数而定制</summary>

[StructLayout(LayoutKindSequential)]

public struct MOUSEPOINT{

public int X;

public int Y;

public MOUSEPOINT(int x, int y) {

thisX = x;

thisY = y;

}

}

键位表

public enum EKey {

//鼠标b

None = 0,

鼠标左键 = 1, LButton = 0x1,

鼠标右键 = 2, RButton = 0x2,

取消 = 3, Cancel = 0x3,

鼠标中键 = 4, MButton = 0x4,

鼠标侧键1 = 5, XButton1 = 0x5,

鼠标侧键2 = 6, XButton2 = 0x6,

//功能键

退格 = 8, Back = 0x8,

跳格 = 9, Tab = 0x9,

LineFeed = 0xA, //10,

Clear = 0xC, //12,

回车 = 13, Enter = 0xD,

退出 = 27, Esc = 0x1B,

空格 = 32, Space = 0x20,

CapsLock = 0x14,

ScrollLock = 0x91,

NumLock = 0x90,

//组合键

Modifiers = -65536,

按Shift = 16, Shift = 0x10,

按Ctrl = 17, Ctrl = 0x11,

按Alt = 18, Menu = 0x12, /ALT键码名为Menu/

按住Shift = 65536, //0x10000,

按住Ctrl = 131072, //0x20000,

按住Alt = 262144, //0x40000,

左Shift = 160, LShift = 0xA0,

右Shift = 161, RShift = 0xA1,

左Ctrl = 162, LControl = 0xA2,

右Ctrl = 163, RControl = 0xA3,

左Alt = 164, LMENU = 0xA4,

右Alt = 165, RMENU = 0xA5,

左Win = 91, LWIN = 0x5B,

右Win = 92, RWIN = 0x5C,

目录 = 93, Apps = 0x5D,

//键盘上部

分号 = 186, 冒号 = 186, OEMSemicolon = 0xBA, OEM1 = 0xBA, / ; : /

等号 = 187, 加号 = 187, OEMPlus = 0xBB, / = + /

逗号 = 188, 小于号 = 188, OEMComma = 0xBC, / , < /

减号 = 189, 下划线 = 189, OEMinus = 0xBD, / = + /

句号 = 190, 大于号 = 190, OEMPeriod = 0XBE, / > /

斜杠 = 191, 问号 = 191, OEMQuestion = 0xBF, OEM2 = 0xBF, / / /

重音 = 192, 波浪 = 192, OEMtilde = 0xC0, OEM3 = 0xC0, / ` ~ /

左方括号 = 219, 左大括号 = 219, OEMOpenBreackets = 0xDB, OEM4 = 0xDB, / [ { /

反斜杠 = 220, 竖线 = 220, OEMPipe = 0xDC, OEM5 = 0xDC, / \ | /

右方括号 = 221, 右大括号 = 221, OEMCloseBreackets = 0xDD, OEM6 = 0xDD, / ] } /

引号 = 222, 双引号 = 222, 单引号 = 222, OEMQuptes = 0xDE, OEM7 = 0xDE, / ' " /

尖括号 = 223, OEMBackslash = 0xDF, / 102键盘上的尖括号或反斜杠键 /

//键盘中部

截屏 = 44, PrintScreen = 0x2C,

暂停 = 19, Pause = 0x13, Break = 0x13, /BREAK为自定义/

休眠 = 95, Sleep = 0x5F,

Insert = 0x2D,

Home = 0x24,

End = 0x23,

Delete = 0x2E,

PageDown = 0x22,

PageUp = 0x21,

左键 = 37, LEFT = 0x25,

上键 = 38, UP = 0x26,

右键 = 39, RIGHT = 0x27,

下键 = 40, DOWN = 0x28,

//小键盘

侧0 = 96, Numpad0 = 0x60, NumpadInsert = 96, /NumpadInsert为自定义/

侧1 = 97, Numpad1 = 0x61, NumpadDelete = 97, /NumpadDelete为自定义/

侧2 = 98, Numpad2 = 0x62, NumpadDown = 98, /NumpadDown为自定义/

侧3 = 99, Numpad3 = 0x63,

侧4 = 100, Numpad4 = 0x64, NumpadLeft = 100, /NumpadLeft为自定义/

侧5 = 101, Numpad5 = 0x65,

侧6 = 102, Numpad6 = 0x66, NumpadRight = 102, /NumpadRight为自定义/

侧7 = 103, Numpad7 = 0x67,

侧8 = 104, Numpad8 = 0x68, NumpadUp = 104, /NumpadUp为自定义/

侧9 = 105, Numpad9 = 0x69,

侧乘 = 106, Mutiply = 0x6A,

侧加 = 107, Add = 0x6B,

侧回车 = 108, Separator = 0x6C,

侧减 = 109, Subtract = 0x6D,

侧点 = 110, Decimal = 0x6E,

侧除 = 111, Divide = 0x6F,

//功能键

F1 = 0x70,

F2 = 0x71,

F3 = 0x72,

F4 = 0x73,

F5 = 0x74,

F6 = 0x75,

F7 = 0x76,

F8 = 0x77,

F9 = 120,

F10 = 0x79,

F11 = 0x7A,

F12 = 0x7B,

F13 = 0x7C,

F14 = 0x7D,

F15 = 0x7E,

F16 = 0x7F,

F17 = 0x80,

F18 = 0x81,

F19 = 130,

F20 = 0x83,

F21 = 0x84,

F22 = 0x85,

F23 = 0x86,

F24 = 0x87,

//数字字母

数0 = 48, D0 = 0x30,

数1 = 49, D1 = 0x31,

数2 = 50, D2 = 0x32,

数3 = 51, D3 = 0x33,

数4 = 52, D4 = 0x34,

数5 = 53, D5 = 0x35,

数6 = 54, D6 = 0x36,

数7 = 55, D7 = 0x37,

数8 = 56, D8 = 0x38,

数9 = 57, D9 = 0x39,

A = 65, //0x41,

B = 66, //0x42,

C = 67, //0x43,

D = 68, //0x44,

E = 69, //0x45,

F = 70, //0x46,

G = 71, //0x47,

H = 72, //0x48,

I = 73, //0x49,

J = 74, //0x4A,

K = 75, //0x4B,

L = 76, //0x4C,

M = 77, //0x4D,

N = 78, //0x4E,

O = 79, //0x4F,

P = 80, //0x50,

Q = 81, //0x51,

R = 82, //0x52,

S = 83, //0x53,

T = 84, //0x54,

U = 85, //0x55,

V = 86, //0x56,

W = 87, //0x57,

X = 88, //0x58,

Y = 89, //0x59,

Z = 90, //0x5A,

//其他

Attn = 0xF6,

BrowserBack = 0xA6,

BrowserFavorites = 0xAB,

BrowserForward = 0xA7,

BrowserHome = 0xAC,

BrowserRefresh = 0xA8,

BrowserSearch = 170,

BrowserStop = 0xA9,

Crsel = 0xF7,

EraseEof = 0xF9,

Exsel = 0xF8,

FinalMode = 0x18,

HanguelMode = 0x15,

HangulMode = 0x15,

HanjaMode = 0x19,

帮助 = 47, Help = 0x2F,

IMEAccept = 30,

IMEAceept = 30,

IMEConvert = 0x1C,

IMEModeChange = 0x1F,

IMENonconvert = 0x1D,

JunjaMode = 0x17,

KanaMode = 0x15,

KanjiMode = 0x19,

KeyCode = 0xFFFF,

LaunchApplication1 = 0xB6,

LaunchApplication2 = 0xB7,

LaunchMail = 180,

音量减小 = 0xAE,

音量禁用 = 0xAD,

音量放大 = 0xAF,

选择 = 41, Select = 0x29,

打印 = 42, Print = 0x2A,

Execute = 0x2B,

MediaSelect = 0xB5,

MediaNextTrack = 0xB0,

MediaPlayPause = 0xB3,

MediaPreviousTrack = 0xB1,

MediaStop = 0xB2,

播放 = 250, Play = 0xFA,

OemBackslash = 0xE2,

OemClear = 0xFE,

Pa1 = 0xFD,

Packet = 0xE7,

Prior = 0x21,

ProcessKey = 0xE5,

NoName = 0xFC,

Zoom = 0xFB,

}

楼上的别乱教 GetDlgltem是用来获取子窗口或者控件的指针的

关于如何在MFC中获取控件句柄

在win32利用API来编程时 我们是通过hwnd = CreateWindow( )来建立一个窗体,同时返回一个句柄

MFC中的窗口类和控件类都是又一个基类CWnd派生出来的

MFC里封装了CreateWindow( )的过程

所以CWnd类本来自己就有一个句柄成员为m_hWnd

所以只要获得了窗口或者控件的指针 就可以调用成员变量m_hWnd来获取句柄

例如在当前窗口或者控件下 *** 作 就可以直接用this指针 this->m_hWnd

另外 GetSafeHwnd 这个函数也可以试试 具体情况具体分析

具体用法看MSDN吧

记住一点的是 MFC中的消息映射的过程就是通过指针与句柄的映射来实现的

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