Function Reference


_GDIPlus_ImageGetVerticalResolution

Returns vertical resolution in DPI (pixels per inch) of an image

#include <GDIPlus.au3>
_GDIPlus_ImageGetVerticalResolution ( $hImage )

Parameters

$hImage Handle to an image object

Return Value

Success: an integer of DPI (pixels per inch).
Failure: 0 and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GDIP_ERR* see GPIPlusConstants.au3).
@error: 11 - Invalid DPI.
10 - Invalid image handle.

Related

_GDIPlus_ImageGetHorizontalResolution

See Also

Search GdipGetImageVerticalResolution in MSDN Library.

Example

#include "Extras\HelpFileInternals.au3"

#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <ScreenCapture.au3>
#include <WinAPIHObj.au3>
#include <WindowsStylesConstants.au3>

Example()

Func Example()
    Local $hBitmap, $hImage

    ; Create GUI
    GUICreate("GDI+", 600, 400)
    _MemoCreate(2, 2, 596, 396, $WS_VSCROLL)
    GUISetState(@SW_SHOW)

    ; Initialize GDI+ library
    _GDIPlus_Startup()

    ; Capture 32 bit bitmap
    $hBitmap = _ScreenCapture_Capture("")
    $hImage = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap)

    ; Show vertical resolution in DPI (dots per inch) of image
    _MemoWrite("VerticalResolution DPI : " & _GDIPlus_ImageGetVerticalResolution($hImage)) ;

    ; Clean up resources
    _GDIPlus_ImageDispose($hImage)
    _WinAPI_DeleteObject($hBitmap)

    ; Shut down GDI+ library
    _GDIPlus_Shutdown()

    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc   ;==>Example