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(svn r18424) -Fix [FS#3327]: [Windows] the help window would be too large in some cases

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This commit is contained in:
rubidium
2009-12-07 17:13:28 +00:00
parent e473b88318
commit b71fad33f2
2 changed files with 67 additions and 7 deletions
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63
src/os/windows/win32.cpp
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@@ -311,23 +311,72 @@ void CreateConsole()
#endif
}
/** Temporary pointer to get the help message to the window */
static const char *_help_msg;
/** Callback function to handle the window */
static INT_PTR CALLBACK HelpDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_INITDIALOG: {
char help_msg[8192];
const char *p = _help_msg;
char *q = help_msg;
while (q != lastof(help_msg) && *p != '\0') {
if (*p == '\n') {
*q++ = '\r';
if (q == lastof(help_msg)) {
q[-1] = '\0';
break;
}
}
*q++ = *p++;
}
*q = '\0';
#if defined(UNICODE)
/* We need to put the text in a seperate buffer because the default
* buffer in MB_TO_WIDE might not be large enough (512 chars) */
wchar_t help_msgW[8192];
#endif
SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(help_msg, help_msgW, lengthof(help_msgW)));
SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
} return TRUE;
case WM_COMMAND:
if (wParam == 12) ExitProcess(0);
return TRUE;
case WM_CLOSE:
ExitProcess(0);
}
return FALSE;
}
void ShowInfo(const char *str)
{
if (_has_console) {
fprintf(stderr, "%s\n", str);
} else {
bool old;
#if defined(UNICODE)
/* We need to put the text in a seperate buffer because the default
* buffer in MB_TO_WIDE might not be large enough (512 chars) */
wchar_t help_msgW[8192];
#endif
ReleaseCapture();
_left_button_clicked = _left_button_down = false;
old = MyShowCursor(true);
if (MessageBox(GetActiveWindow(), MB_TO_WIDE_BUFFER(str, help_msgW, lengthof(help_msgW)), _T("OpenTTD"), MB_ICONINFORMATION | MB_OKCANCEL) == IDCANCEL) {
CreateConsole();
if (strlen(str) > 2048) {
/* The minimum length of the help message is 2048. Other messages sent via
* ShowInfo are much shorter, or so long they need this way of displaying
* them anyway. */
_help_msg = str;
DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(101), NULL, HelpDialogFunc);
} else {
#if defined(UNICODE)
/* We need to put the text in a seperate buffer because the default
* buffer in MB_TO_WIDE might not be large enough (512 chars) */
wchar_t help_msgW[8192];
#endif
if (MessageBox(GetActiveWindow(), MB_TO_WIDE_BUFFER(str, help_msgW, lengthof(help_msgW)), _T("OpenTTD"), MB_ICONINFORMATION | MB_OKCANCEL) == IDCANCEL) {
CreateConsole();
}
}
MyShowCursor(old);
}