#include <stdio.h>
#include <string.h>
 
int main() {
 
	char tecla[5] = "AEIOU";
	char vo[1];
 
	printf("Una vocal mayuscula: ");
	scanf("%s",vo);
 
	printf("%c\n",tecla[3] );  /* Lo hace correctamente */
 
	printf("Esto esta %s\n",(strcmp(tecla[3],vo) == 0) ? "BIEN" : "MAL"); /* No es capaz de leer el dato */
 
	return 0;
}

# -*- coding: utf-8 -*- 
 
import wx
import wx.xrc
 
class MyFrame1 ( wx.Frame ):
 
	def __init__( self, parent ):
		wx.Frame.__init__ ( self, parent, id = wx.ID_ANY, title = wx.EmptyString, pos = wx.DefaultPosition, size = wx.Size( 50,80 ), style = wx.DEFAULT_FRAME_STYLE|wx.TAB_TRAVERSAL )
 
		self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
 
		bSizer1 = wx.BoxSizer( wx.VERTICAL )
 
		self.m_button1 = wx.Button( self, wx.ID_ANY, u"MyButton", wx.DefaultPosition, wx.DefaultSize, 0 )
		bSizer1.Add( self.m_button1, 0, wx.ALL, 5 )
 
 
		self.SetSizer( bSizer1 )
		self.Layout()
 
		self.Centre( wx.BOTH )
 
		# Connect Events
		self.m_button1.Bind( wx.EVT_BUTTON, self.m_button1OnButtonClick )
 
	# Virtual event handlers, overide them in your derived class
	def m_button1OnButtonClick( self, event ):
		if self.m_button1.GetLabel() == "MyButton":
			self.m_button1.SetLabel("OTRO")
			while self.m_button1.GetLabel() == "OTRO":
				print "hola"
		else:
			self.m_button1.SetLabel("MyButton")
 
 
Window = wx.App(False)
Principal = MyFrame1(None)
Principal.Show(True)
Window.MainLoop()

Error	1	Ninguna sobrecarga para el método 'Show' acepta '3' argumentos

DialogResult result = MessageBox.Show(msg.ToString(), "Modificar",MessageBoxButtons.YesNo);