diff options
Diffstat (limited to 'src/fl_call_main.c')
| -rw-r--r-- | src/fl_call_main.c | 55 |
1 files changed, 36 insertions, 19 deletions
diff --git a/src/fl_call_main.c b/src/fl_call_main.c index 025e7f03c..de05b98d4 100644 --- a/src/fl_call_main.c +++ b/src/fl_call_main.c @@ -22,29 +22,40 @@ * "main()". This will allow you to build a Windows Application * without any special settings. * - * Because of problems with the Microsoft Visual C++ header files - * and/or compiler, you cannot have a WinMain function in a DLL. - * I don't know why. Thus, this nifty feature is only available - * if you link to the static library. + * You cannot have this WinMain() function in a DLL because it would have + * to call \c main() outside the DLL. Thus, this nifty feature is only + * available if you link to the static library. * - * Currently the debug version of this library will create a - * console window for your application so you can put printf() - * statements for debugging or informational purposes. Ultimately - * we want to update this to always use the parent's console, - * but at present we have not identified a function or API in - * Microsoft(r) Windows(r) that allows for it. + * However, it is possible to build this module separately so you can + * use it in progams that link to the shared library. + * + * Currently the debug version of this library will create a console window + * for your application so you can put printf() statements for debugging or + * informational purposes. Ultimately we want to update this to always use + * the parent's console, but at present we have not identified a function + * or API in Microsoft(r) Windows(r) that allows for it. */ /* - * This file is compiled only on Windows platforms (since FLTK 1.4.0). - * Therefore we don't need to test the _WIN32 macro anymore. - * The _MSC_VER macro is tested to compile it only for Visual Studio - * platforms because GNU platforms (MinGW, MSYS) don't need it. + * Notes for FLTK developers: + * + * 1) Since FLTK 1.4.0 this file is compiled only on Windows, hence we don't + * need to test the _WIN32 macro. + * 2) This file must not call any FLTK library functions because this would + * not work with /both/ the DLL /and/ the static library (linkage stuff). + * 3) Converting the commandline arguments to UTF-8 is therefore implemented + * here *and* in the library but this seems to be an acceptable compromise. + * 4) (Unless someone finds a better solution, of course. Albrecht) + * 5) The condition "!defined(FL_DLL)" prevents building this in the shared + * library, i.e. "WinMain()" will not be defined in the shared lib (DLL). + * 6) The condition "!defined (__GNUC__)" prevents compilation of this + * module with MinGW, MSYS, and Cygwin which don't use WinMain(). + * 7) It is unclear if there are other build systems on Windows that need a + * WinMain() entry point. Earlier comments and code seem to indicate that + * Borland C++ would require it. */ -#if !defined(FL_DLL) && !defined (__GNUC__) -#include <FL/fl_utf8.h> -#include <FL/fl_string_functions.h> +#if !defined(FL_DLL) && !defined (__GNUC__) #include <windows.h> #include <stdio.h> @@ -78,9 +89,13 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, freopen("conout$", "w", stderr); #endif /* _DEBUG */ - /* Convert the command line arguments to UTF-8 */ + /* Get the command line arguments as Windows Wide Character strings */ LPWSTR *wideArgv = CommandLineToArgvW(GetCommandLineW(), &argc); + + /* Allocate an array of 'argc + 1' string pointers */ argv = (char **)malloc((argc + 1) * sizeof(char *)); + + /* Convert the command line arguments to UTF-8 */ for (i = 0; i < argc; i++) { int ret = WideCharToMultiByte(CP_UTF8, /* CodePage */ 0, /* dwFlags */ @@ -90,7 +105,7 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, sizeof(strbuf), /* cbMultiByte */ NULL, /* lpDefaultChar */ NULL); /* lpUsedDefaultChar */ - argv[i] = fl_strdup(strbuf); + argv[i] = _strdup(strbuf); } argv[argc] = NULL; // required by C standard at end of list @@ -118,6 +133,8 @@ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, } #else + /* STR# 2973: solves "empty translation unit" error */ typedef int dummy; + #endif /* !defined(FL_DLL) && !defined (__GNUC__) */ |