Yo,

I am currently going through the much recommended book "Programming Windows" and experiencing some stuff. One of which was formatting the hInstance and prevHInstance into a string. WHICH CRASHES THE PROGRAM! I hope I am doing something wrong! Please scope the code below and let me know either the reason + workaround for this misbehaviour or what is my mistake!

import std.stdio;


version( Windows ) {
  import std.c.windows.windows;
  import std.string;
  import std.conv;

  extern( Windows )
  int WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) {
    //size_t noInstance = cast( size_t )hInstance;
    void * vp = null;
    size_t noInstance = cast( size_t )vp;
    string noInstanceS = to!string( noInstance ); //This line crashes
    /*
    MessageBoxA(
      null,
      //toStringz( "HInstance: " ~ to!string( hInstance ) ~ "\nHPrevInstance: " ~ to!string( hPrevInstance ) ),
      toStringz( "Hello" ),
      toStringz( "HelloIsMe" ),
      0
    );
    */


    return 0;
  }

} else {
  import std.conv;

  void main( string[] args ) {
    void * vp = null;
    size_t vpInt = cast( size_t )vp;
    writeln( "VP: ", to!string( vpInt ) ); //Here it does not.
  }

}

Regards!

Phil

On 12/24/12, Phil Lavoie <maidenphil@hotmail.com> wrote:
> I am currently going through the much recommended book "Programming Windows" and experiencing some stuff. One of which was formatting the hInstance and prevHInstance into a string.

You need to initialize the runtime or you will get crashes as soon as the GC allocates memory.

Note that many Programming Windows examples were translated into D and you can find them here: https://github.com/AndrejMitrovic/DWinProgramming

Here's an example how the runtime is initialized: https://github.com/AndrejMitrovic/DWinProgramming/blob/master/Samples/Chap01/HelloMsg/HelloMsg.d

See the `Runtime.initialize(&exceptionHandler);` call.

On Monday, 24 December 2012 at 18:28:04 UTC, Andrej Mitrovic wrote:
> On 12/24/12, Phil Lavoie <maidenphil@hotmail.com> wrote:
>> I am currently going through the much recommended book
>> "Programming Windows" and experiencing some stuff. One of which
>> was formatting the hInstance and prevHInstance into a string.
>
> You need to initialize the runtime or you will get crashes as soon as
> the GC allocates memory.
>
> Note that many Programming Windows examples were translated into D and
> you can find them here:
> https://github.com/AndrejMitrovic/DWinProgramming
>
> Here's an example how the runtime is initialized:
> https://github.com/AndrejMitrovic/DWinProgramming/blob/master/Samples/Chap01/HelloMsg/HelloMsg.d
>
> See the `Runtime.initialize(&exceptionHandler);` call.

Wow buddy thanks for the accurate and most informative answer. I will be looking through those examples.

Thanks again!

Phil