applied patch #1682748 - installer icon for message box

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5036 212acab6-be3b-0410-9dea-997c60f758d6

Docs/src/flowcontrol.but

@@ -212,6 +212,8 @@ Displays a MessageBox containing the text "messagebox_text". mb_option_list must
 
 \b \e{MB_ICONSTOP} - Display with stop icon
 
+\b \e{MB_USERICON} - Display with installer's icon
+
 \b \e{MB_TOPMOST} - Make messagebox topmost
 
 \b \e{MB_SETFOREGROUND} - Set foreground

Source/exehead/util.c

@@ -23,6 +23,7 @@
 #include "fileform.h"
 #include "exec.h"
 #include "ui.h"
+#include "resource.h"
 
 #ifdef NSIS_CONFIG_LOG
 #if !defined(NSIS_CONFIG_LOG_ODS) && !defined(NSIS_CONFIG_LOG_STDOUT)
@@ -84,6 +85,19 @@ int NSISCALL my_GetDialogItemText(UINT idx, char *val)
 
 int NSISCALL my_MessageBox(const char *text, UINT type) {
   int _type = type & 0x001FFFFF;
+  static MSGBOXPARAMS mbp = {
+    sizeof(MSGBOXPARAMS),
+    0,
+    0,
+    0,
+    0,
+    0,
+    MAKEINTRESOURCE(IDI_ICON2),
+    0,
+    0,
+    0
+  };
+  
 #ifdef NSIS_CONFIG_SILENT_SUPPORT
   // default for silent installers
   if (g_exec_flags.silent && type >> 21)
@@ -92,7 +106,14 @@ int NSISCALL my_MessageBox(const char *text, UINT type) {
   // no silent or no default, just show
   if (g_exec_flags.rtl)
     _type ^= MB_RIGHT | MB_RTLREADING;
-  return MessageBox(g_hwnd, text, g_caption, _type);
+
+  mbp.hwndOwner = g_hwnd;
+  mbp.hInstance = g_hInstance;
+  mbp.lpszText = text;
+  mbp.lpszCaption = g_caption;
+  mbp.dwStyle = _type;
+  
+  return MessageBoxIndirect(&mbp);
 }
 
 void NSISCALL myDelete(char *buf, int flags)

Source/script.cpp

@@ -3776,6 +3776,7 @@ int CEXEBuild::doCommand(int which_token, LineParser &line)
           MBD(MB_ICONINFORMATION)
           MBD(MB_ICONQUESTION)
           MBD(MB_ICONSTOP)
+          MBD(MB_USERICON)
           MBD(MB_TOPMOST)
           MBD(MB_SETFOREGROUND)
           MBD(MB_RIGHT)