C++windows内核编程笔记day03_day04_day05

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windows消息机制、消息格式和消息处理1

unicode支持，windows下用：
1、先在#include<windows.h>上面，定义 UNICODE
#define UNICODE
2、定义字符串
TCHAR * ptxt=TEXT("学习hello c++");
3、根据需要，打印不同格式字符串
#ifdef UNICODE
   wprintf(L"%s\n",ptxt);
#else
   printf("%s\n",ptxt);
#endif

打印UNICODE WriteConsole API函数：
HANDLE hstd=GetStdHandle(STD_OUTPUT_HANDLE);
wchar_t tc=300;
WriteConsole(hstd,&tc,1,NULL,NULL);

day66 am over
//winpro中，处理点击关闭时,返回0,退出消息循环(退出程序)
   switch(msg)
   {
   case WM_DESTROY:
       PostQuitMessage(0);
       break;
   }
//窗口类缓冲区大小，基于一个窗口类创建出来的所有窗口共享的缓冲区
wce.cbClsExtra=0;//数据是4的整数倍，一般200
//写入数据：
DWORD SetClassLong( HWND hWnd,       // handle to window
int nIndex,      // 字节索引
LONG dwNewLong   // new value
);
//读取数据
DWORD GetClassLong( HWND hWnd, // handle to window
int nIndex // 字节索引
);
//窗口缓冲区大小，某一个窗口的数据缓冲区
   wce.cbWndExtra=0;
   //写入数据
   LONG SetWindowLong( HWND hWnd,       // handle to window
int nIndex,      // 字节索引
LONG dwNewLong   // new value
);
//获取数据
LONG GetWindowLong( HWND hWnd, // handle to window
int nIndex //字节索引
);
//系统消息格式
typedef struct tagMSG {
HWND   hwnd;
UINT   message;
WPARAM wParam;
LPARAM lParam;
DWORD time;
POINT pt;
} MSG, *PMSG;

//在创建窗口之后还未显示的时候
   case WM_CREATE:
       OnCreate(hwnd,lparam);
void OnCreate(HWND hwnd,LPARAM lparam)
{
   CREATESTRUCT *pcs=(CREATESTRUCT*)lparam;
   //对应CreateWindowEx的12个参数
   char * txt=(char *)pcs->lpCreateParams;//最后的附加参数
   MessageBox(NULL,txt,"info",MB_OK);
}

day66 pm over
void OnSizeChange(HWND hwnd,LPARAM lparam)
{
   int w=LOWORD(lparam);
   int h=HIWORD(lparam);
   HWND he=GetDlgItem(hwnd,1001);
   MoveWindow(he,0,0,w,h);
}
//窗口大小变化时产生消息
   case WM_SIZE:
       OnSizeChange(hwnd,lparam)
       break;
//windows发送消息
SendMessage//发送消息，等待消息返回
PostMessage//发送消息，不等待消息返回
   PostMessage(hwnd,WM_QUIT,0,0);//发送退出消息
用户自定义消息定义(可用31743个),如下：
#define WM_MYMSG WM_USER+1
#define WM_MYMSG2 WM_USER+2

case WM_PAINT://窗口重新绘制
       OnPaint(hwnd);
       break;
case WM_LBUTTONDOWN://点击鼠标左键，
       InvalidateRect(hwnd,NULL,NULL);//窗口重绘
       break;
//窗口绘图
void OnPaint(HWND hwnd)
{
   WriteConsole(g_houtput,"wm_paint\n",9,NULL,NULL);
   PAINTSTRUCT ps={0};
   HDC hdc=BeginPaint(hwnd,&ps);//必须在WM_PAINT消息处理函数中使用
   TextOut(hdc,200,200,"hello",5);//绘制字符串到界面
   EndPaint(hwnd,&ps);
}

键盘消息：
   case WM_KEYDOWN://键盘按键消息
       OnKeydown(hwnd,wparam);
       break;
void OnKeydown(HWND hwnd,WPARAM wparam)
{
   char txt[200]={0};
   sprintf(txt,"wm_keydown：%08X,%d\n",wparam,wparam);//虚拟键码
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
   switch(wparam)
   {
   case VK_UP:
       g_ypos-=10;
       if(g_ypos<0) g_ypos=0;
       break;
   case VK_DOWN:
       g_ypos+=10;
       break;
   case VK_LEFT:
       g_xpos-=10;
       if(g_xpos<0) g_xpos=0;
       break;
   case VK_RIGHT:
       g_xpos+=10;
       break;
   }
   InvalidateRect(hwnd,NULL,TRUE);//重新绘制窗口
}
case WM_CHAR://translateMessage发送的，只有可见字符才能触发
   on_char(hwnd,wparam,lparam);
void on_char(HWND hwnd,WPARAM wparam,LPARAM lparam)
{
   char txt[200]={0};
   sprintf(txt,"char code %08X,%d\n",wparam,wparam);//ascii码
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
}

鼠标消息：函数参数大致相同，查看MSDN Library就知道了。
   case WM_LBUTTONDOWN://点击鼠标左键，
   case WM_LBUTTONUP:
   case WM_RBUTTONDOWN:
   case WM_RBUTTONUP:
   case WM_MOUSEMOVE:
   case WM_LBUTTONDBLCLK://在注册窗口风格中要加 CS_DBLCLKS
   case WM_RBUTTONDBLCLK:
   case WM_MOUSEWHEEL:
   case WM_MOUSELEAVE:

如：
   case WM_LBUTTONUP://点击鼠标左键，
       onLbuttondown(hwnd,wparam,lparam);
       break;
void onLbuttondown(HWND hwnd,WPARAM wparam,LPARAM lparam)
{
   char txt[200]={0};
   if(wparam&MK_LBUTTON==MK_LBUTTON) wparam=wparam-MK_LBUTTON;//排除本身
   if(wparam&MK_SHIFT==MK_SHIFT) {}//shift键按下
   if(wparam&MK_RBUTTON==MK_RBUTTON) {}//右键按下
   sprintf(txt,"其他键：%08X,x=%d,y=%d\n",wparam,LOWORD(lparam),HIWORD(lparam));//可见字符的ascii码
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
}
       case WM_MOUSEMOVE://鼠标移动
           OnMouseMove(hwnd,lparam);
           break;
void OnMouseMove(HWND hwnd,LPARAM lparam)
{
   char txt[200]={0};
   sprintf(txt,"mouse move：x=%d,y=%d\n",LOWORD(lparam),HIWORD(lparam));//可见字符的ascii码
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
}
//鼠标双击的触发顺序：单击down,单击up,双击down,单击up
//在.h文件中加定义指定系统最低版本：
#define _WIN32_WINNT 0X400

       case WM_MOUSEWHEEL://鼠标滚轮
           OnMouseWheel(hwnd,wparam);
           break;
void OnMouseWheel(HWND hwnd,WPARAM wparam){
   short npy=HIWORD(wparam);//滚轮移动的偏移量
   char txt[200]={0};
   sprintf(txt,"OnMouseWheel：x=%d\n",npy);
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
}

定时器消息WM_TIMER：//不太精确
UINT setTimer(HWND hwnd,UINT id)
{
   SetTimer(hwnd,id,1000,timer1);//可以在这里直接指定处理函数
   //SetTimer(hwnd,id,1000,NULL);//在WM_TIMER中捕捉再处理
   return id;
}
//直接指定的处理函数
void CALLBACK timer1(HWND hwnd,UINT umsg,UINT uid,DWORD dwtime)
{
   char txt[200]={0};
   sprintf(txt,"timer1:id=%d\n",uid);
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
}

day68 pm 96
//在WM_TIMER中捕捉再处理
   case WM_TIMER:
       timer1Proc(hwnd,msg,wparam,lparam);
       break;
LRESULT CALLBACK timer1Proc(
                           HWND hwnd,       // handle to window
                           UINT uMsg,       // WM_TIMER
                           WPARAM wParam,   // timer identifier
                           LPARAM lParam    // timer callback (TIMERPROC)
)
{
   char txt[200]={0};
   sprintf(txt,"timer1:id=%d\n",wParam);
   WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);
   return 0;
}
   RECT rc={0};
   GetClientRect(hwnd,&rc);//获取窗口边界
   //画圆
   RECT g_rc={0};
   PAINTSTRUCT ps={0};
   HDC hdc=BeginPaint(hwnd,&ps);//必须在WM_PAINT消息处理函数中使用
   //TextOut(hdc,g_xpos,g_ypos,"hello",5);//绘制字符串到界面
   Ellipse(hdc,g_rc.left,g_rc.top,g_rc.right,g_rc.bottom);
   EndPaint(hwnd,&ps);

代码示例：

和day01一样，建立程序，

修改stdafx.h ，加一行： #define _WIN32_WINNT 0X400

修改主要cpp文件：

// win4.cpp : Defines the entry point for the application.//#include "stdafx.h"#include <stdio.h>HINSTANCE g_hinstance=0;//全局句柄HANDLE g_houtput=0;HWND g_edit=0;int g_xpos=100;int g_ypos=100;#define WM_MYMSG WM_USER+1UINT setTimer(HWND hwnd,UINT id){SetTimer(hwnd,id,1000,NULL);//可以在这里指定处理函数，也可以在WM_TIMER中捕捉再处理return id;}void SetExtra(HWND hwnd){SetClassLong(hwnd,0,301);SetWindowLong(hwnd,0,401);}void GetExtra(HWND hwnd){long nc= GetClassLong(hwnd,0);long nw=GetWindowLong(hwnd,0);char txt[200]={0};sprintf(txt,"%d,%d",nc,nw);MessageBox(NULL,txt,"info",MB_OK);}void OnCreate(HWND hwnd,LPARAM lparam){//g_edit=CreateWindowEx(0,"edit","hello",WS_CHILD|WS_VISIBLE|WS_BORDER,0,0,//200,200,hwnd,NULL,g_hinstance,NULL);SendMessage(hwnd,WM_MYMSG,1,2);setTimer(hwnd,1023);//PostMessage(hwnd,WM_MYMSG,1,2);}void OnSizeChange(HWND hwnd,LPARAM lparam){int width=LOWORD(lparam);int height=HIWORD(lparam);//改变窗口大小时,同时改编辑框大小//MoveWindow(g_edit,0,0,width,height,TRUE);CHAR txt[40]={0};sprintf(txt,"%d,%d\n",width,height);WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}//窗口绘图void OnPaint(HWND hwnd){WriteConsole(g_houtput,"wm_paint\n",9,NULL,NULL);PAINTSTRUCT ps={0};HDC hdc=BeginPaint(hwnd,&ps);//必须在WM_PAINT消息处理函数中使用TextOut(hdc,g_xpos,g_ypos,"hello",5);//绘制字符串到界面EndPaint(hwnd,&ps);}void OnKeydown(HWND hwnd,WPARAM wparam){//WriteConsole(g_houtput,"wm_keydown\n",11,NULL,NULL);bool ischange=false;switch(wparam){case VK_UP:g_ypos-=10;if(g_ypos<0) g_ypos=0;ischange=true;break;case VK_DOWN:g_ypos+=10;ischange=true;break;case VK_LEFT:g_xpos-=10;if(g_xpos<0) g_xpos=0;ischange=true;break;case VK_RIGHT:g_xpos+=10;ischange=true;break;}if(ischange) InvalidateRect(hwnd,NULL,TRUE);}void OnKeyup(HWND hwnd,WPARAM wparam){char txt[200]={0};sprintf(txt,"VIRTUAL KEY:%08X,%d\n",wparam,wparam);//虚拟键码WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}void on_char(HWND hwnd,WPARAM wparam,LPARAM lparam){char txt[200]={0};sprintf(txt,"char code %08X,%d\n",wparam,wparam);//可见字符的ascii码WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}void onLbuttondown(HWND hwnd,WPARAM wparam,LPARAM lparam){char txt[200]={0};if(wparam&MK_LBUTTON==MK_LBUTTON) wparam=wparam-MK_LBUTTON;//排除本身if(wparam&MK_SHIFT==MK_SHIFT) {}//shift键按下if(wparam&MK_RBUTTON==MK_RBUTTON) {}//右键按下sprintf(txt,"onLbuttondown:其他键：%08X,x=%d,y=%d\n",wparam,LOWORD(lparam),HIWORD(lparam));//可见字符的ascii码WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}void OnMouseMove(HWND hwnd,LPARAM lparam){char txt[200]={0};g_xpos=LOWORD(lparam);g_ypos=HIWORD(lparam);sprintf(txt,"mouse move：x=%d,y=%d\n",g_xpos,g_ypos);//可见字符的ascii码WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);InvalidateRect(hwnd,NULL,TRUE);}void OnLbuttonDBClk(HWND hwnd){char txt[200]={0};sprintf(txt,"OnLbuttonDBClk\n");WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}void OnMouseWheel(HWND hwnd,WPARAM wparam){short npy=HIWORD(wparam);//滚轮移动的偏移量char txt[200]={0};sprintf(txt,"OnMouseWheel：x=%d\n",npy);WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}void CALLBACK  timer1(HWND hwnd,UINT umsg,UINT uid,DWORD dwtime){char txt[200]={0};sprintf(txt,"timer1:id=%d\n",uid);WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);}LRESULT CALLBACK timer1Proc(HWND hwnd,       // handle to windowUINT uMsg,       // WM_TIMERWPARAM wParam,   // timer identifierLPARAM lParam    // timer callback (TIMERPROC)){char txt[200]={0};sprintf(txt,"timer1:id=%d\n",wParam);WriteConsole(g_houtput,txt,strlen(txt),NULL,NULL);return 0;}//回调函数LRESULT CALLBACK WinProc(HWND hwnd,UINT msg,WPARAM wparam,LPARAM lparam){switch(msg){case WM_SYSCOMMAND:if(wparam==SC_CLOSE){int ret=MessageBox(NULL,"是否退出","info",MB_YESNO);if(ret==IDYES){//下面代码会自动关闭和销毁//PostQuitMessage(0);}else return 0;//不执行下面代码}break;//窗口大小变化时产生消息case WM_SIZE:OnSizeChange(hwnd,lparam);break;case WM_CREATE:OnCreate(hwnd,lparam);break;case WM_DESTROY://PostQuitMessage(0);PostMessage(hwnd,WM_QUIT,0,0);break;case WM_MYMSG://处理自定义消息WriteConsole(g_houtput,"wm_mymsg\n",9,NULL,NULL);break;case WM_PAINT://窗口重新绘制OnPaint(hwnd);break;case WM_LBUTTONDOWN://点击鼠标左键，onLbuttondown(hwnd,wparam,lparam);break;case WM_LBUTTONUP://点击鼠标左键，onLbuttondown(hwnd,wparam,lparam);break;case WM_RBUTTONDOWN:case WM_RBUTTONUP:break;case WM_MOUSEMOVE://OnMouseMove(hwnd,lparam);break;case WM_MOUSEWHEEL://鼠标滚轮OnMouseWheel(hwnd,wparam);break;case WM_LBUTTONDBLCLK://在注册窗口风格中要加 CS_DBLCLKSOnLbuttonDBClk(hwnd);break;case WM_RBUTTONDBLCLK://InvalidateRect(hwnd,NULL,NULL);//窗口重绘break;case WM_KEYDOWN://键盘按键消息OnKeydown(hwnd,wparam);break;case WM_KEYUP://键盘按键消息OnKeyup(hwnd,wparam);break;case WM_TIMER:timer1Proc(hwnd,msg,wparam,lparam);break;case WM_CHAR://translateMessage发送的，只有可见字符才能触发//on_char(hwnd,wparam,lparam);break;;}return DefWindowProc(hwnd,msg,wparam,lparam);}//注册窗口类BOOL Register(LPSTR lpClassName,WNDPROC wndproc){WNDCLASSEX wce={0};wce.cbSize=sizeof(wce);wce.cbClsExtra=200;wce.cbWndExtra=200;wce.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);wce.hCursor=NULL;wce.hIcon=NULL;wce.hIconSm=NULL;wce.hInstance=g_hinstance;wce.lpfnWndProc=wndproc;wce.lpszClassName=lpClassName;wce.lpszMenuName=NULL;wce.style=CS_HREDRAW|CS_VREDRAW|CS_DBLCLKS;ATOM atom= RegisterClassEx(&wce);if(atom==0){MessageBox(NULL,"注册失败","info",MB_OK);return FALSE;}return TRUE;}//创建窗口HWND CreateMain(LPSTR lpClassName,LPSTR lpWndName){HWND hwnd=CreateWindowEx(0,lpClassName,lpWndName,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,g_hinstance,"hello create");return hwnd;}//创建子窗口HWND CreateChild(HWND phwnd,LPSTR lpClassName,LPSTR lpWndName){if(Register(lpClassName,DefWindowProc)==0){MessageBox(phwnd,"创建子窗口失败","info",MB_OK);return NULL;}//子窗口风格，都要 WS_CHILD|WS_VISIBLEHWND hwnd=CreateWindowEx(0,lpClassName,lpWndName,WS_CHILD|WS_VISIBLE|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,200,200,phwnd,NULL,g_hinstance,NULL);return hwnd;}//显示窗口void Display(HWND hwnd){ShowWindow(hwnd,SW_SHOW);UpdateWindow(hwnd);}//处理消息void MSGdeal(){ MSG msg={0};while(GetMessage(&msg,NULL,0,0)){TranslateMessage(&msg);//翻译消息 DispatchMessage(&msg);//派发给 WinProc 处理消息 }// while(1)// {// if(PeekMessage(&msg,NULL,0,0,PM_NOREMOVE))//有消息// {// if(!GetMessage(&msg,NULL,0,0)) return;// else// {// TranslateMessage(&msg);//翻译消息,只翻译可见字符// DispatchMessage(&msg);//派发给 WinProc 处理消息 // }// }// else//无消息// {// //WriteConsole(g_houtput,"nomsg\n",6,NULL,NULL);// //Sleep(1);// }// }}int APIENTRY WinMain(HINSTANCE hInstance,                     HINSTANCE hPrevInstance,                     LPSTR     lpCmdLine,                     int       nCmdShow){AllocConsole();//调试程序方法g_houtput=GetStdHandle(STD_OUTPUT_HANDLE);g_hinstance=hInstance; // TODO: Place code here.//SysReg();//AppReg();if(Register("main",WinProc)==0){MessageBox(NULL,"注册失败","提示",MB_OK);return 0;}HWND hwnd= CreateMain("main","pro1");Display(hwnd);// HWND hchild=CreateChild(hwnd,"child1","child1");//创建子窗口// HWND hchild2=CreateChild(hwnd,"child2","child2");// // MoveWindow(hchild,300,200,200,200,TRUE);// MoveWindow(hchild2,500,200,200,200,TRUE);// SetExtra(hchild);// GetExtra(hchild2);MSGdeal();return 0;}

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