win32学习之--------面向对象的窗口类封装代码记录-创新互联
---创建stdafx.h头文件
#include#include #include #include "resource.h"
---创建QWnd类==》窗口基类
---QWnd.h文件
#pragma once
#include "stdafx.h"
class QWnd
{
public:
QWnd(void);
~QWnd(void);
virtual BOOL CreateEx(
DWORD dwExStyle,
LPCTSTR lpszClassName,
LPCTSTR lpszWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU nIDorHMenu,
LPVOID lpParam = NULL
);
virtual BOOL PreCreateWindow(CREATESTRUCT & cs);
public:
BOOL ShowWindow(int nCmdShow);
BOOL UpdateWindow();
BOOL DestroyWindow();
public:
static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
public:
virtual LRESULT WindowProc(UINT uMsg, WPARAM wParam, LPARAM lParam);
virtual LRESULT Default(UINT uMsg, WPARAM wParam, LPARAM lParam);
public:
//message handle
virtual LRESULT onClose(WPARAM wParam, LPARAM lParam);
virtual LRESULT onDestroy(WPARAM wParam, LPARAM lParam);
virtual LRESULT onCreate(WPARAM wParam, LPARAM lParam);
public:
BOOL SubClassWindow(HWND hWnd);
static QWnd * FromHandle(HWND hWnd);
public:
HWND m_hWnd;
WNDPROC m_lpfnOldWndProc;
};---QWnd.cpp文件
#include "QWnd.h"
QWnd::QWnd() {
m_hWnd = NULL;
m_lpfnOldWndProc = NULL;
}
QWnd::~QWnd() {
}
LRESULT CALLBACK QWnd::WndProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam) {
if (uMsg == WM_CREATE || uMsg == WM_NCCREATE) {
LPCREATESTRUCT pCs = (LPCREATESTRUCT)lParam;
if (pCs) {
QWnd* qWnd = (QWnd*) pCs->lpCreateParams;//这个就是之前CreateWindowEx 传过来的this 这里的处理原因是因为CreateWindowEx在SetWindowLong之前 所以用这种方式
if (qWnd) {
qWnd->m_hWnd = hWnd;
qWnd->m_lpfnOldWndProc = (WNDPROC)GetWindowLong(hWnd, GWL_WNDPROC);
return qWnd->WindowProc(uMsg, wParam, lParam);
}
}
}
QWnd * qWnd = (QWnd*)GetWindowLong(hWnd, GWL_USERDATA);
if (qWnd) {
return qWnd->WindowProc(uMsg, wParam, lParam);
}
return ::DefWindowProc(hWnd,uMsg,wParam,lParam);
}
LRESULT QWnd::WindowProc( UINT uMsg, WPARAM wParam, LPARAM lParam) {
switch (uMsg) {
case WM_CLOSE:
{
return onClose(wParam, lParam);
}
break;
case WM_DESTROY:
{
return onDestroy(wParam, lParam);
}
break;
case WM_CREATE:
{
return onCreate(wParam, lParam);
}
break;
}
return Default( uMsg, wParam, lParam);
}
LRESULT QWnd::Default(UINT uMsg, WPARAM wParam, LPARAM lParam) {
if (m_lpfnOldWndProc == QWnd::WndProc) {
return ::DefWindowProc(m_hWnd, uMsg, wParam, lParam);
}
return m_lpfnOldWndProc(m_hWnd, uMsg, wParam, lParam);
}
//msg handle
LRESULT QWnd::onClose(WPARAM wParam, LPARAM lParam) {
return Default( WM_CLOSE, wParam, lParam);
}
LRESULT QWnd::onDestroy(WPARAM wParam, LPARAM lParam) {
return Default(WM_DESTROY, wParam, lParam);
}
LRESULT QWnd::onCreate(WPARAM wParam, LPARAM lParam) {
return Default(WM_CREATE, wParam, lParam);
}
BOOL QWnd::SubClassWindow(HWND hWnd) {
assert(hWnd);
if (m_hWnd == hWnd) {
return true;
}
m_lpfnOldWndProc = (WNDPROC)GetWindowLong(hWnd,GWL_WNDPROC);
if (m_lpfnOldWndProc != QWnd::WndProc) {
m_hWnd = hWnd;
SetWindowLong(m_hWnd, GWL_USERDATA, (LONG)this);
SetWindowLong(m_hWnd, GWL_WNDPROC, (LONG)QWnd::WndProc);
return TRUE;
}
return FALSE;
}
QWnd * QWnd::FromHandle(HWND hWnd) {
assert(hWnd);
QWnd * qWnd = (QWnd*)GetWindowLong(hWnd, GWL_USERDATA);
return qWnd;
}
BOOL QWnd::PreCreateWindow(CREATESTRUCT& cs) {
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
BOOL bRet = ::GetClassInfoEx(cs.hInstance,cs.lpszClass,&wcex ); //检查窗口类是否被注册
if (bRet) {
return true;
}
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = cs.hInstance;
wcex.hIcon = (HICON)::LoadIcon(NULL, (LPCTSTR)IDI_ICON1);
wcex.hIconSm = (HICON)::LoadIcon(NULL, (LPCTSTR)IDI_ICON1);
wcex.hbrBackground = (HBRUSH)::GetStockObject(WHITE_BRUSH);
wcex.hCursor = (HCURSOR)::LoadCursor(NULL, IDC_ARROW);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = cs.lpszClass;
bRet = ::RegisterClassEx(&wcex);
if (!bRet) {
return FALSE;
}
return true;
}
BOOL QWnd::CreateEx(
DWORD dwExStyle,
LPCTSTR lpszClassName,
LPCTSTR lpszWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU nIDorHMenu,
LPVOID lpParam
) {
HINSTANCE hInstance = (HINSTANCE)::GetModuleHandle(NULL);
assert(hInstance);
CREATESTRUCT cs;
cs.cx = nWidth;
cs.cy = nHeight;
cs.dwExStyle = dwExStyle;
cs.hInstance = hInstance;
cs.hMenu = nIDorHMenu;
cs.hwndParent = hWndParent;
cs.lpCreateParams = lpParam;
cs.lpszClass = lpszClassName;
cs.lpszName = lpszWindowName;
cs.style = dwExStyle;
cs.x = x;
cs.y = y;
BOOL bRet = PreCreateWindow(cs);
if (!bRet) {
MessageBox(NULL, _T("注册窗口类失败"),_T("注册窗口类"), 0);
return false;
}
HWND hWnd = CreateWindowEx(dwExStyle, lpszClassName, lpszWindowName, dwStyle,x,y,nWidth,nHeight, hWndParent, nIDorHMenu, hInstance,this);//这个函数执行完 会发送WM_CREATE消息 this的作用是因为提前传递
if (NULL == hWnd) {
return FALSE;
}
m_hWnd = hWnd;
SetWindowLong(m_hWnd, GWL_USERDATA, (LONG)this);
m_lpfnOldWndProc = (WNDPROC)GetWindowLong(m_hWnd, GWL_WNDPROC);//原类的处理程序
if (m_lpfnOldWndProc != QWnd::WndProc) {
//子类化
SetWindowLong(m_hWnd, GWL_WNDPROC, (LONG)QWnd::WndProc);
WindowProc(WM_CREATE,0,0); //这里重新发送WM_CREATE消息
WindowProc(WM_NCCREATE, 0, 0); //这里重新发送WM_CREATE消息
}
return TRUE;
}
BOOL QWnd::ShowWindow(int nCmdShow) {
assert(m_hWnd);
return ::ShowWindow(m_hWnd, nCmdShow);
}
BOOL QWnd::UpdateWindow() {
assert(m_hWnd);
return ::UpdateWindow(m_hWnd);
}
BOOL QWnd::DestroyWindow() {
assert(m_hWnd);
return ::DestroyWindow(m_hWnd);
}---创建QWinApp基类==》应用程序基类
---QWinApp.h文件
#pragma once
#include "QWnd.h"
#include "QButton.h"
class QMainFrame :
public QWnd
{
public:
QMainFrame();
~QMainFrame();
public:
LRESULT onClose(WPARAM wParam, LPARAM lParam);
LRESULT onDestroy(WPARAM wParam, LPARAM lParam);
virtual LRESULT onCreate(WPARAM wParam, LPARAM lParam);
public:
QButton *m_wndButton;
};---QWinApp.cpp文件
#include "QWinApp.h"
#include "QGlobal.h"
QWinApp::QWinApp()
{
m_pMainWnd = NULL;
g_pWinApp = this;
}
QWinApp::~QWinApp()
{
}
BOOL QWinApp::InitInstance() {
return TRUE;
}
BOOL QWinApp::ExitInstance() {
return TRUE;
}
void QWinApp::run() {
MSG msg;
while (::GetMessage(&msg, NULL, NULL, NULL)) {
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
}---创建应该程序类的全局变量
---创建QGlobal.h头文件
#pragma once #include "QWinApp.h" extern QWinApp* g_pWinApp; extern QWinApp* GlbGetApp();
---创建QGlobal.cpp文件
#include "QGlobal.h"
QWinApp* g_pWinApp = NULL;
QWinApp* GlbGetApp() {
return g_pWinApp;
}---创建QWnd的子类--子控件Button
---创建文件QButton.h
#pragma once
#include "QWnd.h"
class QButton :
public QWnd
{
public:
QButton();
~QButton();
public:
BOOL CreateEx(
LPCTSTR lpszWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU nIDorHMenu
);
};---创建文件QButton.cpp
#include "QButton.h"
QButton::QButton()
{
}
QButton::~QButton()
{
}
BOOL QButton::CreateEx(
LPCTSTR lpszWindowName,
DWORD dwStyle,
int x,
int y,
int nWidth,
int nHeight,
HWND hWndParent,
HMENU nIDorHMenu
) {
return QWnd::CreateEx(0, _T("BUTTON"), lpszWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, nIDorHMenu);
}---创建QWnd的子类---QMainFrame
---创建QMainFrame.h文件
#pragma once
#include "QWnd.h"
#include "QButton.h"
class QMainFrame :
public QWnd
{
public:
QMainFrame();
~QMainFrame();
public:
LRESULT onClose(WPARAM wParam, LPARAM lParam);
LRESULT onDestroy(WPARAM wParam, LPARAM lParam);
virtual LRESULT onCreate(WPARAM wParam, LPARAM lParam);
public:
QButton *m_wndButton;
};---创建QMainFrame.cpp文件
#include "QMainFrame.h"
#define IDC_BUTTON 10001
QMainFrame::QMainFrame()
{
m_wndButton = new QButton();
}
QMainFrame::~QMainFrame()
{
}
LRESULT QMainFrame::onClose(WPARAM wParam, LPARAM lParam) {
return DestroyWindow();
}
LRESULT QMainFrame::onDestroy(WPARAM wParam, LPARAM lParam) {
::PostQuitMessage(0);
return true;
}
LRESULT QMainFrame::onCreate(WPARAM wParam, LPARAM lParam) {
if (NULL == m_wndButton->m_hWnd) {
m_wndButton->CreateEx(_T("www.itxuba.org"),WS_CHILD|WS_VISIBLE|BS_DEFPUSHBUTTON,0,0,200,120,m_hWnd, (HMENU)IDC_BUTTON);
}
return TRUE;
}---创建QWinApp的子类---QDemowinApp
---创建QDemowinApp.h文件
#pragma once
#include "QWinApp.h"
class QDemowinApp :
public QWinApp
{
public:
QDemowinApp();
~QDemowinApp();
public:
virtual BOOL InitInstance();
virtual BOOL ExitInstance();
};
extern QDemowinApp theApp;---创建QDemowinApp.cpp文件
#include "QDemowinApp.h"
#include "QMainFrame.h"
QDemowinApp::QDemowinApp()
{
}
QDemowinApp::~QDemowinApp()
{
}
QDemowinApp theApp;
BOOL QDemowinApp::InitInstance() {
QMainFrame *pMainWnd = new QMainFrame();
assert(pMainWnd);
m_pMainWnd = pMainWnd;
BOOL bRet = pMainWnd->CreateEx(0,_T("www.itxueba.org"),_T("www.itxueba.org"),WS_VISIBLE|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,NULL,NULL);
if (!bRet) {
MessageBox(NULL, _T("create window failed!"), _T("create window!"), 0);
}
pMainWnd->ShowWindow(SW_SHOW);
pMainWnd->UpdateWindow();
return true;
}
BOOL QDemowinApp::ExitInstance() {
if (m_pMainWnd) {
delete m_pMainWnd;
m_pMainWnd = NULL;
}
return TRUE;
}---创建入口程序
#include "QDemowinApp.h"
#include "QGlobal.h"
int WINAPI _tWinMain(
IN HINSTANCE hInstance,
IN HINSTANCE hPrevInstance,
IN LPTSTR lpCmdLine,
IN int nShowCmd
) {
QWinApp* pWinApp = GlbGetApp();
assert(pWinApp);
pWinApp->InitInstance();
pWinApp->run();
pWinApp->ExitInstance();
return TRUE;
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