Question

纯C++ 判断按钮Click事件(按钮是否按下)

我用的是VC++6.0的环境。。
写完一个窗体我在里面放了个按钮用createWindow创的，但是不知道怎么样才可以判断按钮是否被点击，请各位高手们帮帮我。。。不是MFC，是纯的C++
不好意思我不要MFC的。。我要纯的C++的。。。按钮是用 createwindow创的

Answer 1

按钮在CreateWindow创建，判断是否按下是捕捉WM_COMMAND下面的wParam，按钮ID号，比如：
case WM_COMMAND:
switch(wParam)
{
case IDC_hBU_View:
{
FILEVEC vec = GetFies();
if( !vec.empty() )
{
FILEVEC::iterator end = vec.end();
for ( FILEVEC::iterator it = vec.begin();
it != end;
++it )
{
if( CurSet.end() == std::find( CurSet.begin(),CurSet.end(),*it ) )
{
CurSet.push_back(*it);
//SendMessage( g_hLbFiles,LB_ADDSTRING,0,(LPARAM)it->c_str() );
SendMessage( g_hLbFiles,LB_ADDSTRING,0,(LPARAM)DBLib::DBFile::DBGetFileName(it->c_str()).c_str() );
int Line = (int)SendMessage( g_hLbFiles,LB_GETCOUNT,0,0 );
SendMessage( g_hLbFiles,LB_SETCURSEL,Line-1,0 );
SendMessage( g_hLbFiles,LB_SETCURSEL,-1,0 );
}
}
}
}
break;

知道了吗？我从来不废话，不懂Call Me。

Answer 2

MFC是sdk的封装. 不用MFC的话,怎么也得用sdk了.

按钮是sdk的东西.可以自己写一个函数.然后把按钮的click事件和函数关联起来.

Answer 3

不用MFC，可用win32 API.

放了个按钮 -- 也就是至少画了个方块，应当有这个方块的四个角点的坐标啦。
初始化按钮状态 （上还是下）。

API CALLBACK:

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
CPoint aP,mousePos;
....
switch(message)
{
case xxxx :
GetCursorPos(&mousePos);
// 得到 鼠标坐标 mousePos.x ,mousePos.y
// 判断鼠标坐标是否在按钮方块内
// 用 case WM_LBUTTONDOWN, case WM_LBUTTONUP,case WM_LBUTTONDBLCLK, 等鼠标message 先后次序的组合判断按钮是上是下。

}

Answer 4

API调用，找到窗口句柄调用
LRESULT SendMessage(
HWND hWnd,
UINT Msg,
WPARAM wParam,
LPARAM lParam
);

记住一点，按钮是一种特殊化的窗口！

MSDN多看，貌似我也看怎么看，惭愧！

Answer 5

很明显嘛?按钮的点击会向父窗口发送WM_COMMAND消息,捕捉不就行了.

例子:

// Button1.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text

HWND hWndb; //按钮句柄,一定不能放在消息处理函数中定义.

// Foward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;

// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_BUTTON1, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);

// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}

hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_BUTTON1);

// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}

return msg.wParam;
}

//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
// COMMENTS:
//
// This function and its usage is only necessary if you want this code
// to be compatible with Win32 systems prior to the 'RegisterClassEx'
// function that was added to Windows 95. It is important to call this function
// so that the application will get 'well formed' small icons associated
// with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_BUTTON1);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = (LPCSTR)IDC_BUTTON1;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

return RegisterClassEx(&wcex);
}

//
// FUNCTION: InitInstance(HANDLE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{

HWND hWnd;

hInst = hInstance; // Store instance handle in our global variable

hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!hWnd)
{
return FALSE;
}

ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);

return TRUE;
}

//
// FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
TCHAR szHello[MAX_LOADSTRING];
LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING);

switch (message)
{
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
if((HWND)lParam==hWndb&&hWndb!=0) //判断是否点击
MessageBox(hWnd,"你按了按钮!","提示",1);
switch (wmId)
{
case IDM_ABOUT:
//创建按钮
if(hWndb==0)
{
hWndb=::CreateWindow("BUTTON","BUTTON",WS_CHILD | WS_VISIBLE | BS_FLAT | WS_BORDER,5,5,150,30,hWnd,NULL,NULL,NULL);
::ShowWindow(hWndb,SW_SHOW);
}
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}

break;
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code here...
RECT rt;
GetClientRect(hWnd, &rt);
DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER);
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;

default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}

// Mesage handler for about box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_INITDIALOG:
return TRUE;

case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return TRUE;
}

break;
}
return FALSE;
}