windows七个消息队列

windows七个消息队列

windows七个消息队列

---

消息队列

/************************************************************************
Module: CopyData.cpp
Notices: Copyright(c) 2008 Jeffrey Ritcher & Christophe Nasarre
************************************************************************/#include "CmnHdr.h"
#include "resource.h"
#include <malloc.h>
#include <tchar.h>
#include <windowsx.h>//
BOOL Dlg_OnCopyData(HWND hWnd, HWND hWndFrom, PCOPYDATASTRUCT pcds) {Edit_SetText(GetDlgItem(hWnd, pcds->dwData ? IDC_DATA2 : IDC_DATA1),(PTSTR)pcds->lpData);return (TRUE);
}////
BOOL Dlg_OnInitDialog(HWND hWnd, HWND hWndFocus, LPARAM lParam) {chSETDLGICONS(hWnd, IDI_COPYDATA);//初始化编辑框Edit_SetText(GetDlgItem(hWnd, IDC_DATA1), TEXT("测试数据"));Edit_SetText(GetDlgItem(hWnd, IDC_DATA2), TEXT("其他测试数据"));return (TRUE);
}//
void Dlg_OnCommand(HWND hWnd, int id, HWND hWndCtrl, UINT codeNotify) {switch (id) {case IDCANCEL:EndDialog(hWnd, id);break;case IDC_COPYDATA1:case IDC_COPYDATA2:if (codeNotify != BN_CLICKED)break;//获取相应的文本框HWND hWndEdit = GetDlgItem(hWnd,(id == IDC_COPYDATA1) ? IDC_DATA1 : IDC_DATA2);//准备一个COPYDATASTRUCT结构体，其内容会被Copy到//一个内存映像文件中COPYDATASTRUCT cds;//指示哪个数据域的内容要被发送（0=ID_DATA1，1=ID_DATA2)cds.dwData = (DWORD)((id == IDC_COPYDATA1) ? 0 : 1);//获取文本的长度(字节）cds.cbData = (Edit_GetTextLength(hWndEdit) + 1) * sizeof(TCHAR);//在栈中分配一个内容以保存字符串内容cds.lpData = _alloca(cds.cbData);//此功能已弃用，更安全的版本可用；见_malloca//将编辑框里的字符串存到cbs.lpData中Edit_GetText(hWndEdit, (PTSTR)cds.lpData, cds.cbData);//获取应用程序的标题TCHAR szCaption[100];GetWindowText(hWnd, szCaption, sizeof(szCaption) / sizeof(szCaption[0]));//枚举所有具有相同标题的顶层窗口HWND hWndT = NULL;do{hWndT = FindWindowEx(NULL, hWndT, NULL, szCaption);if (hWndT != NULL){FORWARD_WM_COPYDATA(hWndT, hWnd, &cds, SendMessage);}} while (hWndT != NULL);break;}
}//
INT_PTR WINAPI Dlg_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {switch (uMsg) {chHANDLE_DLGMSG(hWnd, WM_INITDIALOG, Dlg_OnInitDialog);chHANDLE_DLGMSG(hWnd, WM_COMMAND, Dlg_OnCommand);chHANDLE_DLGMSG(hWnd, WM_COPYDATA, Dlg_OnCopyData);}return (FALSE);
}//
int WINAPI _tWinMain(HINSTANCE hInstExe, HINSTANCE hPrev, PTSTR lpCmdLIne, int nShowCmd) {DialogBox(hInstExe, MAKEINTRESOURCE(IDD_COPYDATA), NULL, Dlg_Proc);return 0;
}