基于Windows API串口通信程序

#include<windows.h> #include"resource.h" #include<stdio.h> #include <process.h> HINSTANCE hInst; #define IDC_MAIN_EDIT 101 char* myBaud="CBR_19200"; char* myCom="COM2"; char sString[50]={"串口通信——"}; int n=1; HWND hwnd; LRESULT CALLBACK WinSunProc( HWND hwnd, // handle to window UINT uMsg, // message identifier WPARAM wParam, // first message parameter LPARAM lParam // second message parameter ); LRESULT CALLBACK About(HWND hDlg,UINT message,WPARAM wParam,LPARAM lParam); LRESULT CALLBACK Option(HWND hDlg,UINT message,WPARAM wParam,LPARAM lParam); BOOL LoadTextFileToEdit(HWND hEdit ,LPCTSTR pszFileName); BOOL SaveTextFileFromEdit(HWND hEdit, LPCTSTR pszFileName); BOOL LoadMusicFiles(LPCTSTR pszFileName); int WINAPI WinMain( HINSTANCE hInstance, // handle to current instance HINSTANCE hPrevInstance, // handle to previous instance LPSTR lpCmdLine, // command line int nCmdShow // show state ) { WNDCLASSEX wndclass; hInst=hInstance; wndclass.cbClsExtra=NULL; wndclass.cbWndExtra=NULL; wndclass.hbrBackground=(HBRUSH)GetStockObject(LTGRAY_BRUSH); wndclass.hCursor=LoadCursor(NULL,IDC_ARROW); wndclass.hIcon=LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON)); wndclass.hInstance=hInstance; wndclass.lpfnWndProc=WinSunProc; wndclass.lpszClassName="xuejb"; wndclass.lpszMenuName=(LPCTSTR)(IDR_MENU1); wndclass.style=CS_HREDRAW|CS_VREDRAW; wndclass.hIconSm=LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON)); wndclass.cbSize=sizeof(WNDCLASSEX); RegisterClassEx(&wndclass); hwnd=CreateWindow("xuejb","串口通信",WS_OVERLAPPEDWINDOW,350,150, 600,400,NULL,NULL,hInstance,NULL); ShowWindow(hwnd,SW_SHOWNORMAL); UpdateWindow(hwnd); MSG msg; while(GetMessage(&msg,NULL,0,0)>0) { TranslateMessage(&msg); DispatchMessage(&msg); } return 0; } LRESULT CALLBACK WinSunProc( HWND hwnd, // handle to window UINT uMsg, // message identifier WPARAM wParam, // first message parameter LPARAM lParam // second message parameter ) { switch(uMsg) { int wmId,wmEvent; static int cxChar, cyChar ; HWND hButton[5],hBitmap; case WM_CREATE: HFONT hfDefault; HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); cxChar = LOWORD (GetDialogBaseUnits ()) ; cyChar = HIWORD (GetDialogBaseUnits ()) ; hEdit = CreateWindowEx(WS_EX_CLIENTEDGE, "EDIT", "", WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL , 0, 0,100, 100,hwnd, (HMENU)IDC_MAIN_EDIT, GetModuleHandle(NULL), NULL); hButton[0]=CreateWindowEx(WS_EX_CLIENTEDGE, "BUTTON", "接收", WS_CHILD | WS_VISIBLE , cxChar,cyChar,10*cxChar, 2*cyChar,hwnd, (HMENU)IDC_BUTTON, GetModuleHandle(NULL), NULL); hButton[1]=CreateWindowEx(WS_EX_CLIENTEDGE, "BUTTON", "发送", WS_CHILD | WS_VISIBLE , cxChar,cyChar*3,10*cxChar, 2*cyChar,hwnd, (HMENU)IDC_BUTTON1, GetModuleHandle(NULL), NULL); hButton[2]=CreateWindowEx(WS_EX_CLIENTEDGE, "BUTTON", "选项", WS_CHILD | WS_VISIBLE , cxChar,cyChar*5,10*cxChar, 2*cyChar,hwnd, (HMENU)IDC_BUTTON2, GetModuleHandle(NULL), NULL); hButton[3]=CreateWindowEx(WS_EX_CLIENTEDGE, "BUTTON", "打开串口", WS_CHILD | WS_VISIBLE , cxChar,cyChar*7,10*cxChar, 2*cyChar,hwnd, (HMENU)IDC_BUTTON3, GetModuleHandle(NULL), NULL); hBitmap=CreateWindowEx(WS_EX_CLIENTEDGE, "STATIC", "串口通信工具 Designed by: 薛加彬 QQ: 798216108", WS_CHILD | WS_VISIBLE , cxChar,cyChar*10,10*cxChar, 10*cyChar,hwnd, (HMENU)IDC_STATIC , GetModuleHandle(NULL), NULL); if(hEdit == NULL) MessageBox(hwnd, "Could not create edit box.", "Error", MB_OK |MB_ICONERROR); SendMessage(hEdit, WM_SETFONT, (WPARAM)hfDefault, MAKELPARAM(FALSE, 0)); strcat(sString,myCom); strcat(sString,","); strcat(sString,myBaud); SetWindowText(hwnd,sString); break; case WM_SIZE: { HWND hEdit; RECT rcClient; GetClientRect(hwnd, &rcClient); hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); SetWindowPos(hEdit, NULL, 100, 0, rcClient.right, rcClient.bottom, SWP_NOZORDER); } break; case WM_COMMAND: wmId=LOWORD(wParam); wmEvent=HIWORD(wParam); switch(wmId) { case IDM_OPEN: { OPENFILENAME ofn; HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); char szFileName[MAX_PATH] = ""; ZeroMemory(&ofn, sizeof(ofn)); ofn.lStructSize = sizeof(ofn); // SEE NOTE BELOW ofn.hwndOwner = hwnd; ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0"; ofn.lpstrFile = szFileName; ofn.nMaxFile = MAX_PATH; ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY; ofn.lpstrDefExt = "txt"; if(GetOpenFileName(&ofn)) { LoadTextFileToEdit(hEdit ,szFileName); } } break; case IDM_SAVE: { OPENFILENAME ofn; HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); char szFileName[MAX_PATH] = ""; ZeroMemory(&ofn, sizeof(ofn)); ofn.lStructSize = sizeof(ofn); // SEE NOTE BELOW ofn.hwndOwner = hwnd; ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0"; ofn.lpstrFile = szFileName; ofn.nMaxFile = MAX_PATH; ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY; ofn.lpstrDefExt = "txt"; if(GetSaveFileName(&ofn)) { SaveTextFileFromEdit(hEdit, szFileName); } } break; case IDM_NEW: { HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); SetWindowText(hEdit,""); } break; case IDC_BUTTON3: //hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); break; case IDC_BUTTON: case IDM_REC: { LPSTR szRec; COMSTAT Rcs; HANDLE hCom; HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); hCom=CreateFile(myCom,GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); if(hCom!=INVALID_HANDLE_VALUE) { SetupComm(hCom,1024,512); DCB myDCB; GetCommState(hCom,&myDCB); myDCB.BaudRate=*myBaud; myDCB.fBinary=TRUE; myDCB.fParity=TRUE; myDCB.ByteSize=8; myDCB.Parity=NOPARITY; myDCB.StopBits=ONESTOPBIT; SetCommState(hCom,&myDCB); //MessageBox(hwnd,"正在接收!","提示",NULL); DWORD dwRead; szRec=(char*)GlobalAlloc(GPTR, 3); if(ReadFile(hCom,szRec,Rcs.cbInQue,&dwRead,NULL)!=0) { szRec[Rcs.cbInQue]=0; SetWindowText(hEdit,szRec); MessageBox(hwnd,"接收成功!","提示",NULL); } CloseHandle(hCom); GlobalFree(szRec); } else { MessageBox(hwnd,"串口不存在!",NULL,NULL); } } break; case IDC_BUTTON1: case IDM_TRAN: { HANDLE hCom; LPSTR szTran; DWORD dwTextLength; HWND hEdit; hEdit = GetDlgItem(hwnd, IDC_MAIN_EDIT); dwTextLength = GetWindowTextLength(hEdit); hCom=CreateFile(myCom,GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); if(hCom!=INVALID_HANDLE_VALUE) { SetupComm(hCom,1024,512); DCB myDCB; GetCommState(hCom,&myDCB); myDCB.BaudRate=*myBaud; myDCB.fBinary=TRUE; myDCB.fParity=TRUE; myDCB.ByteSize=8; myDCB.Parity=NOPARITY; myDCB.StopBits=ONESTOPBIT; SetCommState(hCom,&myDCB); //MessageBox(hwnd,"正在发送!","提示",NULL); DWORD dwWrite; if(dwTextLength) { szTran= (char*)GlobalAlloc(GPTR, dwTextLength+1); if(GetWindowText(hEdit, szTran, dwTextLength+1)) { if(WriteFile(hCom,szTran,dwTextLength+1,&dwWrite,NULL)) MessageBox(hwnd,"发送成功!","提示",NULL); } } else MessageBox(hwnd,"请输入要发送的数据","提示",NULL); CloseHandle(hCom); GlobalFree(szTran); } else { MessageBox(hwnd,"串口不存在!",NULL,NULL); } } break; case IDC_BUTTON2: case IDM_OPT: DialogBox(hInst,(LPCTSTR)IDD_DIALOG3,hwnd,(DLGPROC)Option);break; cas