diff --git a/src/nimqml/private/dotherside.nim b/src/nimqml/private/dotherside.nim
index 1055211..8f65a0e 100644
--- a/src/nimqml/private/dotherside.nim
+++ b/src/nimqml/private/dotherside.nim
@@ -138,10 +138,12 @@ proc dos_qapplication_clipboard_setText(content: cstring) {.cdecl, dynlib: dynLi
 proc dos_qapplication_installEventFilter(engine: DosQQmlApplicationEngine) {.cdecl, dynlib: dynLibName, importc.}
 
 # QGuiApplication
-proc dos_qguiapplication_create() {.cdecl, dynlib: dynLibName, importc.}
+proc dos_qguiapplication_create(argc: cint, argv: cstringArray) {.cdecl, dynlib: dynLibName, importc.}
 proc dos_qguiapplication_exec() {.cdecl, dynlib: dynLibName, importc.}
 proc dos_qguiapplication_quit() {.cdecl, dynlib: dynLibName, importc.}
+proc dos_qguiapplication_icon(filename: cstring) {.cdecl, dynlib: dynLibName, importc.}
 proc dos_qguiapplication_delete() {.cdecl, dynlib: dynLibName, importc.}
+proc dos_qguiapplication_installEventFilter(engine: DosQQmlApplicationEngine) {.cdecl, dynlib: dynLibName, importc.}
 
 # QQmlContext
 proc dos_qqmlcontext_setcontextproperty(context: DosQQmlContext, propertyName: cstring, propertyValue: DosQVariant) {.cdecl, dynlib: dynLibName, importc.}
diff --git a/src/nimqml/private/qguiapplication.nim b/src/nimqml/private/qguiapplication.nim
index 8db82b2..39435b3 100644
--- a/src/nimqml/private/qguiapplication.nim
+++ b/src/nimqml/private/qguiapplication.nim
@@ -1,18 +1,32 @@
+import os
+
 proc setup*(self: QGuiApplication) =
-  ## Setup a new QApplication
-  dos_qguiapplication_create()
+  ## Setup a new QGuiApplication
+  var argv = allocCStringArray([])
+  argv[0] = getAppFilename().cstring
+  for argi in 1..paramCount():
+    argv[argi] = paramStr(argi).cstring
+
+  var argc = paramCount() + 1
+  dos_qguiapplication_create(argc.cint, argv)
   self.deleted = false
 
 proc delete*(self: QGuiApplication) =
-  ## Delete the given QApplication
+  ## Delete the given QGuiApplication
   if self.deleted:
     return
-  debugMsg("QApplication", "delete")
+  debugMsg("QGuiApplication", "delete")
   dos_qguiapplication_delete()
   self.deleted = true
 
+proc icon*(application: QGuiApplication, filename: string) =
+  dos_qguiapplication_icon(filename.cstring)
+
+proc installEventFilter*(application: QGuiApplication, engine: QQmlApplicationEngine) =
+  dos_qguiapplication_installEventFilter(engine.vptr)
+
 proc newQGuiApplication*(): QGuiApplication =
-  ## Return a new QApplication
+  ## Return a new QGuiApplication
   new(result, delete)
   result.setup()