Spawning a custom window, natively

[The_Cowboy]

Howdy!

Aim: Obtain the ability to load bmp images, on demand, within the game.

• Attempt 1: Load bmp images via FWindowsBitmap

  Code: Select all

  FWindowsBitmap TestBitmap;
  UBOOL bResult = TestBitmap.LoadFile(*FilePath);
  

  Then pray for an API opening for import. Maybe there is one (not quite sure)

  Code: Select all

  const TCHAR* Import( const TCHAR* Buffer, const TCHAR* BufferEnd, const TCHAR* FileType );
  

  in which case I need to know the buffer.

  Code: Select all

  WINDOW_API HBITMAP LoadFileToBitmap( const TCHAR* Filename, INT& SizeX, INT& SizeY )
  {
  	guard(LoadFileToBitmap);
  	TArray<BYTE> Bitmap;
  	if( appLoadFileToArray(Bitmap,Filename) )
  	{
  		HDC hDC				 = GetDC(NULL);
  		BITMAPFILEHEADER* BH = (BITMAPFILEHEADER*)&Bitmap(0);
  		BITMAPINFO* BI		 = (BITMAPINFO*)(&Bitmap(0) + sizeof(BITMAPFILEHEADER));
  		void* RawData		 = &Bitmap(0) + BH->bfOffBits;
  		SizeX                = BI->bmiHeader.biWidth;
  		SizeY                = BI->bmiHeader.biHeight;
  		HBITMAP      hBitmap = CreateDIBitmap( hDC, &BI->bmiHeader, CBM_INIT, RawData, BI, DIB_RGB_COLORS );
  		ReleaseDC( NULL, hDC );
  		return hBitmap;
  	}
  	return NULL;
  	unguard;
  }
  

  Few hints that BITMAPINFO and BITMAPFILEHEADER is what I be needing. Sees like where they are stored, HBITMAP, is hidden?

• Attempt 2: Try to simulate the splash screen, in the beginning, before the complete game loads up.

  Code: Select all

  // An operating system window.
  class WINDOW_API WWindow : 
  #if WIN_OBJ
  public UObject, 
  #endif
  

  
  The thing that is stopping me is

  Code: Select all

  #define WIN_OBJ 0
  

  defined in Window.h

Any direction towards achieving the aim will be greatly appreciated.

Cheers,
The_Cowboy

---

Automatically merged

Minor progress

Spoiler

https://stackoverflow.com/questions/262 ... -getdibits

Seems like UTexture::Import hasn't been implemented yet?

Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol "__declspec(dllimport) public: unsigned short const * __thiscall UTexture::Import(unsigned short const *,unsigned short const *,unsigned short const *)" (__imp_?Import@UTexture@@QAEPBGPBG00@Z) referenced in function __catch$?execSpitIpFromChatString@ACDDiscordActor@@QAEXAAUFFrame@@QAX@Z$1 ChatDiamond G:\SteamLibrary\UnrealTournamentGOTY\ChatDiamond\UTNativeEssentials\UTNativeLightHouse\ChatDiamond\ChatDiamondNative.obj 1

Attempt 1 seems rendered (literally!) fruitless.

[The_Cowboy]

Ok some progress in spawning window natively

A sketch snippet

Code: Select all

void ACDDiscordActor::execOpenNativeTestWindow(FFrame& Stack, RESULT_DECL)
{
	guard(ACDDiscordActor::execOpenNativeTestWindow);
	P_GET_UBOOL(bVisible);
	P_GET_OBJECT(UObject, ParentWindow);
	P_FINISH;

	UViewport* ClientViewPort = UTexture::__Client->Viewports(0); //thx mongo! (amazing this works) and thanks Anthrax

	WObjectProperties* P = new WObjectProperties(TEXT("EditActor"), 0, NULL, WWindow::_Windows(0), 1);
	WWindow::_Windows.AddItem(P);

	P->OpenWindow();
	P->Show(1);

	(VOID*)Result = NULL;

	unguard;
}
IMPLEMENT_FUNCTION(ACDDiscordActor, -1, execOpenNativeTestWindow)

and the beautiful result is like so



Few things to note:
1. I am intending to spawn such window within the game (or game loop!)
2. I know this is possible because I have seen certain, ahem, native mods, a euphemism, doing this.