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#include <windows.h>
#define IDC_TEXT 0x7000
LRESULT CALLBACK WndProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
BOOL LoadTextFileToEdit (HWND hwnd, LPCTSTR FileName);
BOOL SaveTextFileFromEdit (HWND hwnd, LPCTSTR FileName);
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX WindowClass;
WindowClass.style = 0;
WindowClass.cbSize = sizeof (WNDCLASSEX);
WindowClass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
WindowClass.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
WindowClass.hCursor = LoadCursor (NULL, IDC_ARROW);
WindowClass.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
WindowClass.hInstance = hInstance;
WindowClass.lpszClassName = "1";
WindowClass.lpszMenuName = NULL;
WindowClass.lpfnWndProc = WndProc;
WindowClass.cbClsExtra = 0;
WindowClass.cbWndExtra = 0;
if (!RegisterClassEx (&WindowClass))
{
MessageBox (NULL,
"Window class registration failed",
NULL,
MB_OK | MB_ICONWARNING);
return 0;
}
HWND hwnd = CreateWindowEx (WS_EX_CLIENTEDGE,
"1",
"Win32",
WS_OVERLAPPEDWINDOW,
315, 115,
640, 480,
NULL,
NULL,
hInstance,
NULL);
if (hwnd == NULL)
{
MessageBox (NULL,
"Window creation failed",
NULL,
MB_OK | MB_ICONWARNING);
return 0;
}
ShowWindow (hwnd, SW_SHOWNORMAL);
MSG msg;
while (GetMessage (&msg, NULL, 0, 0) > 0)
{
TranslateMessage (&msg);
DispatchMessage (&msg);
if (WM_KEYDOWN == msg.message)
{
SendMessage (hwnd, WM_KEYDOWN, msg.wParam, msg.lParam);
}
}
return 0;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_CLOSE:
DestroyWindow (hwnd);
break;
case WM_DESTROY:
PostQuitMessage (0);
break;
case WM_KEYDOWN:
switch (wParam)
{
case VK_ESCAPE:
DestroyWindow (hwnd);
break;
}
break;
case WM_CREATE:
{
HFONT hfDefault;
HWND hEdit;
hEdit = CreateWindowEx (WS_EX_CLIENTEDGE,
"edit",
"",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | ES_MULTILINE,
0, 0,
100, 100,
hwnd,
(HMENU) IDC_TEXT,
GetModuleHandle (NULL),
NULL);
if (hEdit == NULL)
{
MessageBox (hwnd,
"Could not create edit box",
NULL,
MB_OK | MB_ICONWARNING);
DestroyWindow (hwnd);
}
hfDefault = (HFONT) GetStockObject (DEFAULT_GUI_FONT);
SendMessage (hEdit,
WM_SETFONT,
(WPARAM) hfDefault,
MAKELPARAM (FALSE, 0));
}
break;
case WM_SIZE:
{
HWND hEdit;
RECT rcClient;
GetClientRect (hwnd, &rcClient);
hEdit = GetDlgItem (hwnd, IDC_TEXT);
SetWindowPos (hEdit,
NULL,
0,
0,
rcClient.right,
rcClient.bottom,
SWP_NOZORDER);
}
break;
}
return DefWindowProc (hwnd, msg, wParam, lParam);
}
BOOL LoadTextFileToEdit (HWND hwnd, LPCTSTR FileName)
{
HANDLE hFile;
BOOL bSuccess = FALSE;
hFile = CreateFile (FileName,
GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
0,
NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
DWORD dwFileSize;
dwFileSize = GetFileSize (hFile, NULL);
if (dwFileSize != 0xFFFFFFFF)
{
LPSTR FileText;
FileText = GlobalAlloc (GPTR, dwFileSize + 1);
if (FileText != NULL)
{
DWORD dwRead;
if (ReadFile (hFile, FileText, dwFileSize, &dwRead, NULL))
{
FileText [dwFileSize] = 0;
if (SetWindowText (hwnd, FileText))
bSuccess = TRUE;
}
GlobalFree (FileText);
}
}
CloseHandle (hFile);
}
return bSuccess;
}
BOOL SaveTextFileFromEdit (HWND hwnd, LPCTSTR FileName)
{
HANDLE hFile;
BOOL bSuccess = FALSE;
hFile = CreateFile (FileName,
GENERIC_WRITE,
0,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
if (hFile != INVALID_HANDLE_VALUE)
{
DWORD TextLength;
TextLength = GetWindowTextLength (hwnd);
if (TextLength > 0)
{
LPSTR Text;
DWORD dwBufferSize = TextLength + 1;
Text = GlobalAlloc (GPTR, dwBufferSize);
if (Text != NULL)
{
if (GetWindowText (hwnd, Text, dwBufferSize))
{
DWORD Written;
if (WriteFile (hwnd, Text, TextLength, &Written, NULL))
bSuccess = TRUE;
}
GlobalFree (Text);
}
}
CloseHandle (hFile);
}
return bSuccess;
}
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