#SingleInstance, Force
#NoEnv
#Include <GDIP_All>
pToken := Gdip_Startup()
OnExit, Exit

sFile1 = 1.jpeg
sFile2 = 2.png
sFileRes = 3.jpeg

pBitmap1 := Gdip_CreateBitmapFromFile(sFile1)
Gdip_GetImageDimensions(pBitmap1, Width, Height)

pResultBitmap := Gdip_CreateBitmap(Width, Height)
G := Gdip_GraphicsFromImage(pResultBitmap)
Gdip_SetInterpolationMode(G, 7)

Gdip_DrawImage(G, pBitmap1, 0, 0, Width, Height, 0, 0, Width, Height) 
Gdip_DisposeImage(pBitmap1)

pBitmap2 := Gdip_CreateBitmapFromFile(sFile2)
Gdip_GetImageDimensions(pBitmap2, Width2, Height2)

X := (Width - Width2) // 2
Y := (Height - Height2) // 2

Gdip_DrawImage(G, pBitmap2, X, Y, Width2, Height2, 0, 0, Width2, Height2) 
Gdip_DisposeImage(pBitmap2)

Gdip_DeleteGraphics(G)

Gdip_SaveBitmapToFile(pResultBitmap, sFileRes)
Gdip_DisposeImage(pResultBitmap)
Run %sFileRes%  

Exit: 
	Gdip_Shutdown(pToken)
	ExitApp