LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
static HANDLE hInstance;
HDC dc;
PAINTSTRUCT ps;
RECT client_area;
RECT this_line;
RECT dummy;
TEXTMETRIC tm;
register int i;
int id;
switch (message)
{
case WM_CREATE:
hInstance = ( (LPCREATESTRUCT) lParam)->hInstance;
dc = GetDC(hwnd);
SelectObject(dc, GetStockObject(SYSTEM_FIXED_FONT));
GetTextMetrics(dc, &tm);
ReleaseDC(hwnd, dc);
char_width = tm.tmAveCharWidth;
char_height = tm.tmHeight + tm.tmExternalLeading;
GetClientRect(hwnd, &client_area);
COLS = (client_area.right - client_area.left)/char_width;
LINES = (client_area.bottom - client_area.top)/char_height;
generic_init();
return(0);
case WM_CHAR:
if (wParam == QUIT) {
SendMessage( hwnd, WM_CLOSE, 0, 0L );
} else {
do_command((int)wParam);
}
return(0);
case WM_SETFOCUS:
CreateCaret(hwnd, NULL, char_width, char_height);
ShowCaret(hwnd);
caret_visible = 1;
update_cursor();
return(0);
case WM_KILLFOCUS:
HideCaret(hwnd);
DestroyCaret();
caret_visible = 0;
return(0);
case WM_LBUTTONUP:
{
unsigned xpos = LOWORD(lParam); /* From left */
unsigned ypos = HIWORD(lParam); /* from top */
set_position(xpos / (unsigned)char_width,
ypos / (unsigned)char_height);
return(0);
}
case WM_COMMAND:
id = LOWORD(wParam);
if (id & EDIT_CMD_FLAG) {
if (id & REPEAT_FLAG) do_command(REPEAT);
do_command(CHAR_CMD(id));
return( 0 );
} else {
switch(id) {
case IDM_FILEEXIT:
SendMessage( hwnd, WM_CLOSE, 0, 0L );
return( 0 );
case IDM_HELPABOUT:
if( DialogBox( hInstance, "ABOUTBOX",
hwnd, AboutBoxCallback ) )
InvalidateRect( hwnd, NULL, TRUE );
return( 0 );
case IDM_HELPCONTENTS:
de_error(
"Cursor keys: ^B(left) ^F(right) ^P(up) ^N(down)\n"
"Undo: ^U Write: ^W Quit:^D Repeat count: ^R[n]\n"
"Top: ^T Locate (search, find): ^L text ^L\n");
return( 0 );
}
}
break;
case WM_CLOSE:
DestroyWindow( hwnd );
return 0;
case WM_DESTROY:
PostQuitMessage (0);
GC_win32_free_heap();
return 0;
case WM_PAINT:
dc = BeginPaint(hwnd, &ps);
GetClientRect(hwnd, &client_area);
COLS = (client_area.right - client_area.left)/char_width;
LINES = (client_area.bottom - client_area.top)/char_height;
SelectObject(dc, GetStockObject(SYSTEM_FIXED_FONT));
for (i = 0; i < LINES; i++) {
get_line_rect(i, client_area.right, &this_line);
if (IntersectRect(&dummy, &this_line, &ps.rcPaint)) {
CORD raw_line = retrieve_screen_line(i);
size_t len = CORD_len(raw_line);
char * text = CORD_to_char_star(raw_line);
/* May contain embedded NULLs */
char * plain = plain_chars(text, len);
char * blanks = CORD_to_char_star(CORD_chars(' ',
COLS - len));
char * control = control_chars(text, len);
# define RED RGB(255,0,0)
SetBkMode(dc, OPAQUE);
SetTextColor(dc, GetSysColor(COLOR_WINDOWTEXT));
TextOut(dc, this_line.left, this_line.top,
plain, (int)len);
TextOut(dc, this_line.left + (int)len * char_width,
this_line.top,
blanks, (int)(COLS - len));
SetBkMode(dc, TRANSPARENT);
SetTextColor(dc, RED);
TextOut(dc, this_line.left, this_line.top,
control, (int)strlen(control));
}
}
EndPaint(hwnd, &ps);
screen_was_painted = 1;
return 0;
}
return DefWindowProc (hwnd, message, wParam, lParam);
}
int APIENTRY WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR command_line, int nCmdShow)
{
MSG msg;
WNDCLASS wndclass;
HANDLE hAccel;
# ifdef THREAD_LOCAL_ALLOC
GC_INIT(); /* Required if GC is built with THREAD_LOCAL_ALLOC */
/* Always safe, but this is used as a GC test. */
# endif
if (!hPrevInstance)
{
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = DLGWINDOWEXTRA;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon (hInstance, szAppName);
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
wndclass.hbrBackground = GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = "DE";
wndclass.lpszClassName = szAppName;
if (RegisterClass (&wndclass) == 0) {
char buf[50];
sprintf(buf, "RegisterClass: error code: 0x%X",
(unsigned)GetLastError());
de_error(buf);
return(0);
}
}
/* Empirically, the command line does not include the command name ...
if (command_line != 0) {
while (isspace(*command_line)) command_line++;
while (*command_line != 0 && !isspace(*command_line)) command_line++;
while (isspace(*command_line)) command_line++;
} */
if (command_line == 0 || *command_line == 0) {
de_error("File name argument required");
return( 0 );
} else {
char *p = command_line;
while (*p != 0 && !isspace(*(unsigned char *)p))
p++;
arg_file_name = CORD_to_char_star(
CORD_substr(command_line, 0, p - command_line));
}
hwnd = CreateWindow (szAppName,
FullAppName,
WS_OVERLAPPEDWINDOW | WS_CAPTION, /* Window style */
CW_USEDEFAULT, 0, /* default pos. */
CW_USEDEFAULT, 0, /* default width, height */
NULL, /* No parent */
NULL, /* Window class menu */
hInstance, NULL);
if (hwnd == NULL) {
char buf[50];
sprintf(buf, "CreateWindow: error code: 0x%X",
(unsigned)GetLastError());
de_error(buf);
return(0);
}
ShowWindow (hwnd, nCmdShow);
hAccel = LoadAccelerators( hInstance, szAppName );
while (GetMessage (&msg, NULL, 0, 0))
{
if( !TranslateAccelerator( hwnd, hAccel, &msg ) )
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
return msg.wParam;
}
int APIENTRY WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR command_line, int nCmdShow)
{
MSG msg;
WNDCLASS wndclass;
HACCEL hAccel;
GC_set_find_leak(0);
GC_INIT();
# ifndef NO_INCREMENTAL
GC_enable_incremental();
# endif
# if defined(CPPCHECK)
GC_noop1((GC_word)&WinMain);
# endif
if (!hPrevInstance)
{
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = DLGWINDOWEXTRA;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon (hInstance, szAppName);
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = TEXT("DE");
wndclass.lpszClassName = szAppName;
if (RegisterClass (&wndclass) == 0) {
de_error("RegisterClass error");
return(0);
}
}
/* Empirically, the command line does not include the command name ...
if (command_line != 0) {
while (isspace(*command_line)) command_line++;
while (*command_line != 0 && !isspace(*command_line)) command_line++;
while (isspace(*command_line)) command_line++;
} */
if (command_line == 0 || *command_line == 0) {
de_error("File name argument required");
return( 0 );
} else {
char *p = command_line;
while (*p != 0 && !isspace(*(unsigned char *)p))
p++;
arg_file_name = CORD_to_char_star(
CORD_substr(command_line, 0, p - command_line));
}
hwnd = CreateWindow (szAppName,
TEXT("Demonstration Editor"),
WS_OVERLAPPEDWINDOW | WS_CAPTION, /* Window style */
CW_USEDEFAULT, 0, /* default pos. */
CW_USEDEFAULT, 0, /* default width, height */
NULL, /* No parent */
NULL, /* Window class menu */
hInstance, NULL);
if (hwnd == NULL) {
de_error("CreateWindow error");
return(0);
}
ShowWindow (hwnd, nCmdShow);
hAccel = LoadAccelerators( hInstance, szAppName );
while (GetMessage (&msg, NULL, 0, 0))
{
if( !TranslateAccelerator( hwnd, hAccel, &msg ) )
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
}
return (int)msg.wParam;
}
