Setting wallpaper on windows

[ihoss]

#include <iostream>
#include <stdio.h>
#include <string>
#include <Windows.h>
using namespace std;
 
int main () {
  char *path = "C:\\Bliss.bmp";
  bool ret = SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, 
			path,
			//NULL,
			//0);
			//SPIF_SENDCHANGE);
			//SPIF_SENDWININICHANGE);
			SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
  cout<<"the function returned "<<(ret ? "true" : "false");
  char* str = NULL;	// function allocates the mem with LocalAlloc(), used with LocalFree()
  int msg_ret = FormatMessage(	FORMAT_MESSAGE_ALLOCATE_BUFFER |	// let the function alloc string mem
						FORMAT_MESSAGE_FROM_SYSTEM |	// use system message and not a passed one
						FORMAT_MESSAGE_IGNORE_INSERTS,	// ignore and "inserts"
						NULL, 
						GetLastError(),			// get the error
						MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),	// default language 
						(CHAR*)&str, 
						0, 
						NULL);
  cout<<"\n"<<str;
  cout<<"\n"<<path;
  return 0;
}

#include <iostream>
#include <stdio.h>
#include <string>
#include <Windows.h>
using namespace std;

int main () {
  char *path = "C:\\Bliss.bmp";
  bool ret = SystemParametersInfo(SPI_SETDESKWALLPAPER, 0, 
			path,
			//NULL,
			//0);
			//SPIF_SENDCHANGE);
			//SPIF_SENDWININICHANGE);
			SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
  cout<<"the function returned "<<(ret ? "true" : "false");
  char* str = NULL;	// function allocates the mem with LocalAlloc(), used with LocalFree()
  int msg_ret = FormatMessage(	FORMAT_MESSAGE_ALLOCATE_BUFFER |	// let the function alloc string mem
						FORMAT_MESSAGE_FROM_SYSTEM |	// use system message and not a passed one
						FORMAT_MESSAGE_IGNORE_INSERTS,	// ignore and "inserts"
						NULL, 
						GetLastError(),			// get the error
						MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),	// default language 
						(CHAR*)&str, 
						0, 
						NULL);
  cout<<"\n"<<str;
  cout<<"\n"<<path;
  return 0;
}

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That code actually works! Great!

But it does not work in QT.