Re: HWND is NULL but GetLastError returns 0x00

[Zarathustra]

I filled out all fields of wndclassex and operands of createWindowEx exactly 
the same like in identical (working) C program, and there are still the same 
problem.
//
void main(){
  try{
ptr handle;
//Window wnd = new Window();
WndClassEx wndClass;

wndClass.size  = 0x0030;
wndClass.style = 0x;
wndClass.wndProc   = cast(ptr)wndProc;
wndClass.clsExtraBytes = 0x;
wndClass.wndExtraBytes = 0x;
wndClass.hInstance = kernel32.getModuleHandle(null);
wndClass.hIcon = user32.loadIcon(null, 0x7F00);
wndClass.hCursor   = user32.loadCursor(null, 0x7F00);
wndClass.hbrBackground = gdi32.getStockObject(0x);
wndClass.menuName  = null;
wndClass.className = cast(str)clsname;
wndClass.hIconSm   = user32.loadIcon(null, 0x7F00);


if(!user32.registerClassEx(cast(ptr)wndClass)){
  user32.messageBox(null, 
user32.translateErrorCode(kernel32.getLastError()), cast(str)error, 
0x);
  assert(false, Window class registring failed);
}

handle = user32.createWindowEx(
  0,
  wndClass.className,
  cast(str)applicationcaption,
  0x00CF,
  0,
  0,
  640,
  480,
  null,
  null,
  kernel32.getModuleHandle(null),
  null
);

if(handle is null){
  // ERROR_SUCCESS
  user32.messageBox(null, 
user32.translateErrorCode(kernel32.getLastError()), cast(str)error, 
0x);
  assert(handle);
}
  }
  catch(Object o){
MsgBox(cast(char[])o.toString);
  }
}
//

div0 Wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Zarathustra wrote:
 
  I have the problem with the following code in D2:
  CreateWindowEx returns NULL but I haven't got idea why?
 
 
 snip
 
 That's because your are not properly processing all of the messages that
 are involved in window creation.
 
 See:
 
 http://msdn.microsoft.com/en-us/library/ms632635(VS.85).aspx
 
 or better yet, have a look at my port of atlwin.h:
 
 http://www.sstk.co.uk/atlWinD.php
 
 all of this tedious shit has been done before.
 
 - --
 My enormous talent is exceeded only by my outrageous laziness.
 http://www.ssTk.co.uk
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Re: HWND is NULL but GetLastError returns 0x00

[Zarathustra]

Ok thanks, My fault ;p

HWND is NULL but GetLastError returns 0x00

[Zarathustra]

I have the problem with the following code in D2:
CreateWindowEx returns NULL but I haven't got idea why?

module test;

import base;
static import user32;
static import kernel32;

void MsgBox(immutable char [] o_str){
  user32.messageBox(null, cast(str)o_str, cast(str)msg, 0x0);
}

struct WndClassEx{
align:
  dword size  = 0x0030;
  dword style = 0x;
  ptr   wndProc   = null  ;
  dword clsExtraBytes = 0x;
  dword wndExtraBytes = 0x;
  ptr   hInstance = null  ;
  ptr   hIcon = null  ;
  ptr   hCursor   = null  ;
  ptr   hbrBackground = null  ;
  str   menuName  = null  ;
  str   className = null  ;
  ptr   hIconSm   = null  ;
}

class Application{
  static const ptr  hInstance;
  static const str commandLine;

  static this(){
hInstance   = kernel32.getModuleHandle(null);
commandLine = kernel32.getCommandLine();
assert(hInstance  commandLine, Application initialization fail);
  }
}

extern (Windows) static dword wndProc(ptr o_hwnd, dword o_msg, dword o_wparam, 
dword o_lparam){
  return 0;
}

class Window{
  const ptr handle;

  this(){
WndClassEx wndClass;

wndClass.size  = 0x0030;
wndClass.wndProc   = cast(ptr)wndProc;
wndClass.hInstance = kernel32.getModuleHandle(null);
wndClass.className = cast(str)clsname;


if(!user32.registerClassEx(cast(ptr)wndClass)){
  user32.messageBox(null, 
user32.translateErrorCode(kernel32.getLastError()), cast(str)error, 
0x);
  assert(false, Window class registring failed);
}

handle = user32.createWindowEx(
  0,
  wndClass.className,
  cast(str)applicationcaption,
  0x00CF,
  0,
  0,
  640,
  480,
  null,
  null,
  Application.hInstance,
  null
);

if(handle is null){
  // ERROR_SUCCESS
  user32.messageBox(null, 
user32.translateErrorCode(kernel32.getLastError()), cast(str)error, 
0x);
  assert(handle);
}

user32.showWindow(handle, 0x000A);
user32.updateWindow(handle);
  }


}

void main(){
  try{
Window wnd = new Window();
  }
  catch(Object o){
MsgBox(o.toString);
  }
}

Re: HWND is NULL but GetLastError returns 0x00

[div0]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Zarathustra wrote:

 I have the problem with the following code in D2:
 CreateWindowEx returns NULL but I haven't got idea why?


snip

That's because your are not properly processing all of the messages that
are involved in window creation.

See:

http://msdn.microsoft.com/en-us/library/ms632635(VS.85).aspx

or better yet, have a look at my port of atlwin.h:

http://www.sstk.co.uk/atlWinD.php

all of this tedious shit has been done before.

- --
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.7 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iD8DBQFK2Pq7T9LetA9XoXwRAqHlAKDPIZwXCWSvjNNviUX4SEguGFA+awCgoV7j
VHP6w/x+jpQ42lOhyYxN0/o=
=xX0G
-END PGP SIGNATURE-