以下代码涉及到了很多消息的处理,有些部分注释掉了,主要看代码
#include <windows.h>
#include<tchar.h>
#include <stdio.h>
#include <strsafe.h>
#include <string>
#define IDM_OPEN 102
/*鼠标消息
* 键盘消息
* Onkeydown
* Onkeyup
* //键盘扫描码
* /lParam>>16&0ff
快捷键消息
菜单消息
控件消息
自定义消息
窗口消息
客户区域的概念(Client Aera)
非客户区
*/
using namespace std;
string g_Text;
TEXTMETRIC g_tm;//字体信息
VOID showerrormassage()
{
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |/* 分别为FORMAT_MESSAGE_ALLOCATE_BUFFER由函数分配输出缓冲区,
FORMAT_MESSAGE_FROM_SYSTEM表示程序将会在系统消息表资源中搜索所需消息,FORMAT_MESSAGE_IGNORE_INSERTS程序将会忽略搜索到消息中的插入序列。 */
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&lpMsgBuf,
0, NULL);
MessageBox(NULL, (LPCTSTR)lpMsgBuf, TEXT("Error"), MB_OK | MB_ICONINFORMATION);
LocalFree(lpMsgBuf);
}
//热键消息
//热键消息需要注册
//RegisterHotKey()
//软件卸载的时候还要卸载这个注册
//所以ip号就是这么回事
//
//UnregisterHotKey注销的函数
//LRESULT OnHotkey(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
// return TRUE;
//}
LRESULT Onchar(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
TCHAR szBuf[MAXBYTE];
if ((char)wParam == '\r')
{
g_Text += (char)wParam;
g_Text += '\n';
}
else if ((char)wParam == '\b')
{
if (!g_Text.empty()) {
g_Text.pop_back();
}
}
else
{
g_Text += (char)wParam;
}
wsprintf(szBuf, _T("Onchar %s\n"), g_Text.data());
OutputDebugString(szBuf);
//获取窗口HDC,非客户区GetWindowDC
/*HDC hdc = GetDC(hwnd);*/
/*TextOut(hdc, 0, 0, g_Text.data(), g_Text.length());*///这个API不支持回车
//释放DC
//RECT rc;
//GetClientRect(hwnd, &rc);
创建白色的刷子
//HGDIOBJ hBrushOld;
//HBRUSH hBrush= CreateSolidBrush(RGB(255,255,255));
选择刷子
//hBrushOld= SelectObject(hdc, hBrush);
绘制背景
//FillRect(hdc, &rc, hBrush);
绘制文本
//DrawText(hdc, g_Text.data(), g_Text.length(), &rc, DT_LEFT);
还原默认刷子
//SelectObject(hdc, hBrushOld);
释放刷子
//DeleteObject(hBrush);
释放DC
//ReleaseDC(hwnd, hdc);
//ShowCaret(hwnd);
//SetCaretPos(g_tm.tmAveCharWidth * g_Text.length(), 0);
RECT rc;
GetClientRect(hwnd, &rc);
InvalidateRect(hwnd, NULL, TRUE);//产生WM_PAINT
return TRUE;
}
LRESULT OnCreate(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
//初始化
/* MessageBox(NULL,_T("onCrate"), _T("asm"), MB_OK);*/
OutputDebugString(_T("[11syy]WM_CREATE\n"));
HDC hdc = GetDC(hwnd);
SelectObject(hdc,
GetStockObject(SYSTEM_FIXED_FONT));
GetTextMetrics(hdc, &g_tm);
ReleaseDC(hwnd, hdc);
return TRUE;
}//消息处理
LRESULT OnClese(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
/*MessageBox(NULL, _T("onClose"), _T("asm"), MB_OK);*/
OutputDebugString(_T("[11syy]WM_ClOSE\n"));
DestroyWindow(hwnd);
return TRUE;
}
//LRESULT OnKeydown(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
//{
// //获取键盘状态
// BYTE KeyState[256];
// if (!GetKeyboardState(KeyState))
// {
// return TRUE;
// }
//
// //键盘扫描码
// BYTE SanCode = (UINT)lParam >> 16 & 0xff;
// WORD ch;
// ToAscii(wParam, SanCode, KeyState, &ch, 0);
// TCHAR szBuf[MAXBYTE];
// wsprintf(szBuf, _T("[asm] OnKeydown) % c\n"), ch);
// OutputDebugString(szBuf);
// return TRUE;
//}
//消息处理
LRESULT OnDestroy(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
/* MessageBox(NULL, _T("onDestory"), _T("asm"), MB_OK);
*/PostMessage(hwnd, WM_QUIT, 0, NULL);
OutputDebugString(_T("[11syy]WM_DESTROY\n"));
return TRUE;
}
LRESULT OnSetFocus(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
OutputDebugString(_T("[11syy]WM_SETFOCUS\n"));
//创建插入符
CreateCaret(hwnd, (HBITMAP)NULL,1,g_tm.tmHeight);
SetCaretPos(0, 0);
ShowCaret(hwnd);
return TRUE;
}
LRESULT OnKillFocus(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
OutputDebugString(_T("[11syy] WM_KILLFOCUS\n"));
return TRUE;
}
LRESULT OnEraseBackgroud(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
OutputDebugString(_T("[11syy]OnEraseBackgroud \n"));
return FALSE;
}
LRESULT OnPaint(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
OutputDebugString(_T("[11syy]OnPaint \n"));
//HDC hdc=GetDC(hwnd);不受无效区域的影响
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
RECT rc;
GetClientRect(hwnd, &rc);
DrawText(hdc, g_Text.data(), g_Text.length(), &rc, DT_LEFT);
/*ReleaseDC(hwnd, hdc);*/
//wpaint消息一直会来,因为操作系统会一直认为他是无效区域
//所以你得告诉操作系统,我们画过的地方应该为有效区域
//ValidateRect(hwnd,&rc);
EndPaint(hwnd, &ps);//自动将无效区域设置为有效区域
return TRUE;
}
LRESULT OnCommand(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
OutputDebugString(_T("[11syy]Oncommnd \n"));
WORD WID = LOWORD(wParam);
switch (WID)
{
case 102://这里定义宏IDM_OPEN
MessageBox(NULL, "打开", "asm", MB_OK);
break;
}
return TRUE;
}
//LRESULT OnMove(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
//{
// TCHAR szBuf[MAXBYTE];
// int xpos = (int)(short)LOWORD(lParam);
// int ypos = (int)(short)HIWORD(lParam);
// wsprintf(szBuf, _T("[11syy]xpos:%d ypos:%d"), xpos, ypos);
// PostMessage(hwnd, WM_QUIT, 0, NULL);
// return TRUE;
//}
//LRESULT OnLButtonnDown(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
//{
// int xpos = LOWORD(lParam);
// int ypos = HIWORD(lParam);
// TCHAR szBuf[MAXBYTE];
// wsprintf(szBuf, _T("[11syy]xpos:%d ypos:%d\n"), xpos, ypos);
// OutputDebugString(szBuf);
// /*MessageBox(NULL, szBuf, _T("asm"), MB_OK);*/
// return FALSE;
//}
//LRESULT OnLButtonnup(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
//{
// int xpos = LOWORD(lParam);
// int ypos = HIWORD(lParam);
// TCHAR szBuf[MAXBYTE];
// wsprintf(szBuf, _T("[11syy]xpos:%d ypos:%d\n"), xpos, ypos);
// OutputDebugString(szBuf);
// //MessageBox(NULL, szBuf, _T("asm"), MB_OK);
// return FALSE;
//}
//LRESULT onMouse(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
//{
// LRESULT lResult = FALSE;
// switch (uMsg)
// {
// case WM_LBUTTONDOWN:
// lResult= OnLButtonnDown(hwnd, uMsg, wParam, lParam);
// break;
// }
// return FALSE;
//}
LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
LRESULT lResult = FALSE;
switch (uMsg)
{
case WM_CREATE:
lResult = OnCreate(hwnd, uMsg, wParam, lParam);
break;
case WM_CLOSE:
lResult = OnClese(hwnd, uMsg, wParam, lParam);
break;
case WM_DESTROY:
lResult = OnDestroy(hwnd, uMsg, wParam, lParam);
break;
case WM_CHAR:
lResult= Onchar(hwnd, uMsg, wParam, lParam);
break;
case WM_SETFOCUS:
lResult = OnSetFocus(hwnd, uMsg, wParam, lParam);
break;
case WM_KILLFOCUS:
lResult = OnKillFocus(hwnd, uMsg, wParam, lParam);
break;
case WM_ERASEBKGND://刷背景
lResult = OnEraseBackgroud(hwnd, uMsg, wParam, lParam);
break;
case WM_PAINT://绘制消息
lResult = OnPaint(hwnd, uMsg, wParam, lParam);
break;
case WM_COMMAND:
lResult = OnCommand(hwnd, uMsg, wParam, lParam);
break;
}
//无效区域
if (!lResult) {
return DefWindowProc(hwnd, uMsg, wParam, lParam);//默认窗口过程处理
}
return lResult;
}
//图形界面,窗口
int WINAPI _tWinMain(HINSTANCE hInstance,//应用程序示例句柄
HINSTANCE hPrevInstance,//保留
TCHAR* lpCmdline, //命令行参数,LPSTR可能会变成Unicode
int nCmdShow) {
//发送消息
//SendMessage();//直接调用窗口过程函数同步
//PostMessage();//投递消息到消息队列去
//HWND hNotepad = FindWindow("Notepad", NULL);
//if (hNotepad == NULL)
//{
// return FALSE;
//}
//HWND hEdit = GetWindow(hNotepad, GW_CHILD);
//HWND hEditchild = GetWindow(hEdit, GW_CHILD);
//PostMessage(hEditchild, WM_KEYDOWN, 'A', 0);
//HDC hdc = GetDC(hEditchild);
//while (true)
//{
// TextOut(hdc, 0, 0, "SB", 2);
//}
//ReleaseDC(hEdit, hdc);
//
//窗口显示方式
//比如我们启动这个窗口,最大化,最小化
/*MessageBoxA(NULL, "hell word ", "asm", MB_YESNO);*/\
//int res = MessageBoxW(NULL, L"hell unicode", L"asm", MB_YESNO);
//
//if (res == 0) {
///* MessageBoxW(NULL, L"错误", L"asm", MB_OK);*/
// showerrormassage();
// return 0;
//}程序》实例化》进程》多个窗口
//1.注册窗口
TCHAR szWndclassName[] = { _T("chongmousyy") };
WNDCLASSEX wc = { 0 };
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS;//窗口类型
wc.lpfnWndProc = WindowProc;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDC_HAND);//图标
wc.hCursor = LoadCursor(NULL, IDC_ARROW);//光标FDXX
wc.hbrBackground = CreateSolidBrush(RGB(255, 255, 255));//窗口背景颜色刷子
wc.lpszClassName = szWndclassName;//窗口类名,窗口名字不可以为空
wc.lpszMenuName = NULL;//窗口菜单
if (RegisterClassEx(&wc) == 0)
{
showerrormassage();
return 0;
};
//2.创建窗口
TCHAR szWndName[] = { _T("翀某人") };
HWND hwnd = CreateWindowEx(0,
szWndclassName,
szWndName,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL
);
if (hwnd == 0)
{
showerrormassage();
return 0;
}
HMENU hMenu = CreateMenu();
//弹出菜单
AppendMenu(hMenu, MF_STRING|MF_POPUP,(UINT_PTR)hMenu,"文件(&f)");
AppendMenu(hMenu, MF_STRING|MF_POPUP, (UINT_PTR)hMenu, "编辑(&E)");
//添加子菜单
HMENU hSubMenu = GetSubMenu(hMenu, 0);
AppendMenu(hSubMenu, MF_STRING, IDM_OPEN, "打开(&O)");
SetMenu(hwnd, hMenu);
RECT rc;
GetClientRect(hwnd, &rc);
//空键 按钮
//HWND hEdit = CreateWindowEx(0,
// "EDIT",
// NULL,
// WS_CHILD | WS_VISIBLE|WS_VSCROLL|ES_MULTILINE,
// 0,
// 0,
// rc.right - rc.left,
// rc.bottom - rc.top,
// hwnd,
// NULL,
// hInstance,
// NULL
//);
//3.显示跟新窗口
ShowWindow(hwnd, SW_SHOWNORMAL);
UpdateWindow(hwnd);
//4.消息循环(消息队列)
BOOL bRET;
MSG msg;
while ((bRET = GetMessage(&msg, NULL, 0, 0)) != 0) {
if (bRET == -1) {
break;
}
else
{
//转发消息
TranslateMessage(&msg);//转换键盘消息为字符消息
DispatchMessage(&msg);//派发消息
}
}
//5.消息处理
//资源
return 0;
}