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| #include <stdio.h>
#include <windows.h>
#include "resource.h"
#define true 1
#define false 0
typedef struct tagFILEDATA
{
char szLine1[30];
char szLine2[30];
char szLine3[30];
int byte1;
int byte2;
int byte3;
} FILEDATA, *LPFILEDATA;
HRESULT CALLBACK DlgProc(HWND, UINT, WPARAM, LPARAM);
void OnOpenFile(HWND);
void DoAsynAction(HWND hwnd, FILEDATA *lpFileData);
HANDLE hFile;
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nShowCmd )
{
HWND hwndDlg;
MSG msg;
DWORD dwVersion;
dwVersion = GetVersion();
if ( ! (dwVersion < 0x80000000) )
{
// Windows 95, Windows 98
MessageBox(NULL, "The application is running olny on NT stations", "Warning", MB_ICONEXCLAMATION);
return 0;
}
hwndDlg = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG), 0, DlgProc);
if (!hwndDlg)
return 0;
ShowWindow(hwndDlg, SW_SHOW);
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}
HRESULT CALLBACK DlgProc(HWND hwndDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
HWND hwndButton;
HWND hwndFileName;
HWND hwndLine;
HWND hwndBytes;
HWND hwndStatus;
FILEDATA FileData;
char szBuf[30];
switch(message)
{
case WM_INITDIALOG:
hFile = NULL;
hwndButton = GetDlgItem(hwndDlg, IDC_START);
EnableWindow(hwndButton, false);
hwndFileName = GetDlgItem(hwndDlg, IDC_FILENAME);
SendMessage(hwndFileName, WM_SETTEXT, (long)5, (LPARAM)"none");
hwndStatus = GetDlgItem(hwndDlg, IDC_STATUS);
SendMessage(hwndStatus, WM_SETTEXT, (long)6, (LPARAM)"ready to start");
return true;
case WM_COMMAND:
switch(wParam)
{
case IDC_OPEN:
OnOpenFile(hwndDlg);
break;
case IDC_START:
if (hFile)
{
hwndLine = GetDlgItem(hwndDlg, IDC_LINE1);
SendMessage(hwndLine, EM_GETLINE, 0, (LPARAM)szBuf);
strcpy(FileData.szLine1, szBuf);
hwndLine = GetDlgItem(hwndDlg, IDC_LINE2);
SendMessage(hwndLine, EM_GETLINE, 0, (LPARAM)szBuf);
strcpy(FileData.szLine2, szBuf);
hwndLine = GetDlgItem(hwndDlg, IDC_LINE3);
SendMessage(hwndLine, EM_GETLINE, 0, (LPARAM)szBuf);
strcpy(FileData.szLine3, szBuf);
hwndBytes = GetDlgItem(hwndDlg, IDC_BYTE1);
SendMessage(hwndBytes, EM_GETLINE, 0, (LPARAM)szBuf);
FileData.byte1 = atoi(szBuf);
hwndBytes = GetDlgItem(hwndDlg, IDC_BYTE2);
SendMessage(hwndBytes, EM_GETLINE, 0, (LPARAM)szBuf);
FileData.byte2 = atoi(szBuf);
hwndBytes = GetDlgItem(hwndDlg, IDC_BYTE3);
SendMessage(hwndBytes, EM_GETLINE, 0, (LPARAM)szBuf);
FileData.byte3 = atoi(szBuf);
DoAsynAction(hwndDlg, &FileData);
} else
MessageBox(hwndDlg, "File not open!", "Error", MB_OK);
break;
case IDC_QUIT:
SendMessage(hwndDlg, WM_CLOSE, 0, 0);
break;
}
return true;
case WM_CLOSE:
if (hFile)
{
CloseHandle(hFile);
hFile = NULL;
}
EndDialog(hwndDlg, 0);
DestroyWindow(hwndDlg);
PostQuitMessage(0);
return true;
}
return false;
}
void OnOpenFile(HWND hwnd)
{
TCHAR szFileName[256] = "";
OPENFILENAME ofn;
HWND hwndFileName;
HWND hwndRes;
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwnd;
ofn.lpstrFilter = "TXT File\0*.txt\0\0";
ofn.lpstrCustomFilter = NULL;
ofn.lpstrFile = szFileName;
ofn.nMaxFile = 255;
ofn.lpstrFileTitle = NULL;
ofn.lpstrInitialDir = NULL;
ofn.lpstrTitle = "Open text file";
ofn.Flags = OFN_PATHMUSTEXIST | OFN_OVERWRITEPROMPT;
ofn.lpstrDefExt = "txt";
if(GetOpenFileName(&ofn))
{
hFile = CreateFile(ofn.lpstrFile,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
NULL);
if(hFile)
{
hwndFileName = GetDlgItem(hwnd, IDC_FILENAME);
SendMessage(hwndFileName, WM_SETTEXT, sizeof(ofn.lpstrFile), (LPARAM)ofn.lpstrFile);
hwndRes = GetDlgItem(hwnd, IDC_START);
EnableWindow(hwndRes, true);
}
}
}
void DoAsynAction(HWND hwnd, FILEDATA *lpFileData)
{
HWND hwndStatus;
HWND hwndStart;
OVERLAPPED OverLine1;
OVERLAPPED OverLine2;
OVERLAPPED OverLine3;
int test;
OverLine1.Offset = lpFileData->byte1;
OverLine1.OffsetHigh = 0;
OverLine1.hEvent = NULL;
test = strlen(lpFileData->szLine1);
OverLine2.Offset = lpFileData->byte2;
OverLine2.OffsetHigh = 0;
OverLine2.hEvent = NULL;
OverLine3.Offset = lpFileData->byte3;
OverLine3.OffsetHigh = 0;
OverLine3.hEvent = NULL;
WriteFile(hFile, lpFileData->szLine1, sizeof(char)*strlen(lpFileData->szLine1), NULL, &OverLine1);
WriteFile(hFile, lpFileData->szLine2, sizeof(char)*strlen(lpFileData->szLine2), NULL, &OverLine2);
WriteFile(hFile, lpFileData->szLine3, sizeof(char)*strlen(lpFileData->szLine3), NULL, &OverLine3);
CloseHandle(hFile);
hFile = NULL;
hwndStatus = GetDlgItem(hwnd, IDC_STATUS);
SendMessage(hwndStatus, WM_SETTEXT, (long)10, (LPARAM)"file modifyded");
hwndStart = GetDlgItem(hwnd, IDC_START);
EnableWindow(hwndStart, false);
} |
(
