!=======================================================================
!                   _____________________________
!               \\//-----------------------------
!                )(   //=  //= //= //// //)) //
!               //\\ //_  //  //  /__/ //\\ //
!=======================================================================
!                   XEFFORT LIBRARY SAMPLES
!=======================================================================
! XHello.f90 - Xeffort "Hello world" sample
!
! 2005. Xeffort.com
!    Jugoslav Dujic (jdujic@uns.ns.ac.yu)
! 
! You are free to use the code for both commercial and non-commercial
! use. The code is provided as-is without warranties. You are free to
! distribute and modify this source code provided that the list of 
! original author(s) remains untouched and your revisions are indicated
! as such. Contributions are welcome.
!=======================================================================
MODULE XHello

USE Xeffort
USE DFWIN

IMPLICIT NONE

TYPE(X_MENU)::                xMenu                    !Main menu

!======================================================================
CONTAINS
!=====================================================================
!PURPOSE: Initialization function called by Xeffort library on app start.
LOGICAL FUNCTION XInit(szCmdLine,nCmdShow)
!DEC$IF (_DF_VERSION_.GT.650)
!DEC$ATTRIBUTES DEFAULT, DECORATE, ALIAS: 'XINIT':: XInit
!DEC$ELSE
!DEC$ATTRIBUTES ALIAS: '_XINIT@12':: XInit
!DEC$ENDIF


IMPLICIT NONE

CHARACTER(*), INTENT(IN)::    szCmdLine
INTEGER, INTENT(IN)::         nCmdShow

LOGICAL::            bSt
INTEGER::         ist

INCLUDE 'Resource.fd'

!Loading menu resource
xMenu = XLoadMenu(IDR_MENU_HELLO)
bSt = XLoadAccelerators(IDR_ACCELERATOR)

!Creation of App & frame window
bSt = XCreateSDIApp(xMenu, "Xeffort Hello World", IDI_ICON_XFT)

bSt = XSetHandler(XW_FRAME, WM_PAINT, XW_FRAME_OnPaint)
bSt = XSetHandler(XW_FRAME, WM_SIZE,  XW_FRAME_OnSize)

bSt = XSetCommand(XW_FRAME, IDM_HELP_ABOUT, XW_FRAME_OnAbout)
bSt = XSetCommand(XW_FRAME, IDM_FILE_CLOSE, XW_FRAME_OnExit)

XInit = .TRUE.

END FUNCTION XInit
!=====================================================================
!Handler for painting in the main window. Does not use double-buffering
LOGICAL FUNCTION XW_FRAME_OnPaint(xWnd,xDC,iX1,iY1,iX2,iY2)

TYPE(X_WINDOW)::     xWnd              !Window
TYPE(X_DC)::         xDC               !Window's DC
INTEGER,INTENT(IN):: iX1,iY1,iX2,iY2   !Dimensions of update rectangle

LOGICAL::            iSt

iSt = XFillViewport(xDC, X_BRUSH(BS_SOLID, XCOLOR_WHITE, 0))

CALL XSetWindow(xDC, 0., 0., 100., 100.)
iSt = XSetFont_W(xDC, "Arial", 14.)
iSt = XTextOut_W(xDC,50.,50.,"Hello World!", XCOLOR_BLACK, iStyle=TA_CENTER)

XW_FRAME_OnPaint = .TRUE.

END FUNCTION XW_FRAME_OnPaint
!=====================================================================
!Handler for File/Exit menu
SUBROUTINE XW_FRAME_OnExit(xWnd,ID,nCode)

TYPE(X_WINDOW)::  xWnd
INTEGER::   ID, nCode

INTEGER::   iSt

iSt=XSendMessage(XW_FRAME,WM_CLOSE,0,0)

END SUBROUTINE XW_FRAME_OnExit
!=====================================================================
!Help/About handler
SUBROUTINE XW_FRAME_OnAbout(xWnd,ID,nCode)

TYPE(X_WINDOW)::  xWnd
INTEGER::   ID, nCode

TYPE(X_WINDOW)::  xDlg
LOGICAL::         bSt
INTEGER::         iSt

INCLUDE "Resource.fd"

bSt = XLoadDialog(IDD_DIALOG_ABOUT, xDlg, xWnd)
iSt = XModalDialog(xDlg)
CALL XDestroyDialog(xDlg)

END SUBROUTINE XW_FRAME_OnAbout
!=======================================================================
!XW_FRAME_OnSize is called after the window XW_FRAME is resized
LOGICAL FUNCTION XW_FRAME_OnSize(xWnd, iWidth, iHeight, nFlag)
 
TYPE(X_WINDOW)::              xWnd
INTEGER, INTENT(IN)::         iWidth, iHeight   !Dimensions of client area
INTEGER, INTENT(IN)::         nFlag             !Type of sizing requested

CALL XUpdateWindow(xWnd)
XW_FRAME_OnSize = .FALSE.       !Return .TRUE. to prevent default processing

END FUNCTION XW_FRAME_OnSize
!=====================================================================
END MODULE XHello