Fixed About dialog text for Windows, added untested linux and osx var…

…iants

dllmain.c

@@ -1959,7 +1959,7 @@ void __stdcall SetProcessDataProc(myHANDLE hArcData, tProcessDataProc pProcessDa
 }
 
 int __stdcall GetPackerCaps() {
- return PK_CAPS_SEARCHTEXT | PK_CAPS_BY_CONTENT | PK_CAPS_MODIFY | PK_CAPS_MULTIPLE | PK_CAPS_DELETE | PK_CAPS_NEW;
+ return PK_CAPS_SEARCHTEXT | PK_CAPS_BY_CONTENT | PK_CAPS_MODIFY | PK_CAPS_MULTIPLE | PK_CAPS_DELETE | PK_CAPS_NEW | PK_CAPS_OPTIONS;
 }
 
 BOOL __stdcall CanYouHandleThisFile(char* FileName) {
@@ -1987,7 +1987,7 @@ BOOL __stdcall CanYouHandleThisFile(char* FileName) {
 #ifdef _WIN32
 void __stdcall ConfigurePacker(HWND Parent, HINSTANCE DllInstance)
 {
- MessageBox(Parent,
+ MessageBoxA(Parent,
  "Gives access to Atari ST disk image formats\n"
  ".ST, .MSA. DIM images and .AHD (hard disk sector dumps)\n\n"
 
@@ -2000,6 +2000,74 @@ void __stdcall ConfigurePacker(HWND Parent, HINSTANCE DllInstance)
 
  return;
 }
+#elif defined(__APPLE__)
+// Inspired by https://web.archive.org/web/20201201203547/http://blog.jorgearimany.com/2010/05/messagebox-from-windows-to-mac.html
+//#define IDOK 1
+//#define IDCANCEL 2
+char about_message[] =
+{
+ "Gives access to Atari ST disk image formats\n"
+ ".ST, .MSA. DIM images and .AHD (hard disk sector dumps)\n\n"
+
+ "Written by GGN based on code by tIn\n"
+ "https://github.com/ggnkua/Jacknife",
+
+ "Jacknife - Atari ST disk images plugin"
+};
+void __stdcall ConfigurePacker()
+{
+ //convert the strings from char* to CFStringRef
+ CFStringRef header_ref = CFStringCreateWithCString(NULL, "Jacknife - Atari ST disk images plugin", strlen(header));
+ CFStringRef message_ref = CFStringCreateWithCString(NULL, about_message, strlen(about_message));
+
+ CFOptionFlags result; //result code from the message box
+
+ //launch the message box
+ CFUserNotificationDisplayAlert(
+ 0, // no timeout
+ kCFUserNotificationNoteAlertLevel, //change it depending message_type flags ( MB_ICONASTERISK.... etc.)
+ NULL, //icon url, use default, you can change it depending message_type flags
+ NULL, //not used
+ NULL, //localization of strings
+ header_ref, //header text 
+ message_ref, //message text
+ NULL, //default "ok" text in button
+ NULL, //alternate button title
+ NULL, //other button title, null--> no other button
+ &result //response flags
+ );
+
+ //Clean up the strings
+ CFRelease(header_ref);
+ CFRelease(message_ref);
+
+ //Convert the result
+ //if (result == kCFUserNotificationDefaultResponse)
+ // return IDOK;
+ //else
+ // return IDCANCEL;
+
+}
+#else
+// Inspired by https://stackoverflow.com/questions/13500069/simplest-way-to-pop-up-error-message-box-on-windows-nix-and-macos/28059220#28059220
+#include <gtk/gtk.h>
+void __stdcall ConfigurePacker()
+{
+ GtkWidget *dialog = gtk_message_dialog_new(NULL,
+ GTK_DIALOG_MODAL,
+ getMessageType(GTK_MESSAGE_INFO),
+ getButtonsType(GTK_BUTTONS_OK),
+ "Gives access to Atari ST disk image formats\n"
+ ".ST, .MSA. DIM images and .AHD (hard disk sector dumps)\n\n"
+
+ "Written by GGN based on code by tIn\n"
+ "https://github.com/ggnkua/Jacknife");
+ gtk_window_set_title(GTK_WINDOW(dialog), "Jacknife - Atari ST disk images plugin");
+ gtk_dialog_run(GTK_DIALOG(dialog));
+
+ gtk_widget_destroy(GTK_WIDGET(dialog));
+ while (g_main_context_iteration(NULL, false));
+}
 #endif
 
 #ifdef _WIN32