Updating a picture control without a file

[SmiLe]

Hi all!

Is it possible to update a GUI picture control with an image from the clipboard, instead of using GUICtrlSetImage()?

Thank you for your help.

[Monamo]

Hi all!

Is it possible to update a GUI picture control with an image from the clipboard, instead of using GUICtrlSetImage()?

Thank you for your help.

Here's a "not necessarily graceful" way to update the control (method requires that you have the Auto3Lib from PaulIA). You could then used some extra error handling to notify when the clipboard content isn't an image:

CODE

#include <GUIConstants.au3>

#include <A3LClipboard.au3>

#include <A3LScreenCap.au3>

GUICreate("My GUI", 600, 400)

GUISetState(@SW_SHOW)

$ButtonClipPic = GUICtrlCreateButton("Insert picture from clipboard", 10, 10, 580, 20)

$Pic = GUICtrlCreatePic("", 10, 35, 580, 300,$SS_SUNKEN)

$tempPicFile = @ScriptDir & "\temp.bmp"

While 1

$msg = GUIGetMsg()

Select

Case $msg = $GUI_EVENT_CLOSE

ExitLoop

Case $msg = $ButtonClipPic

$clipPic = _ScreenCap_SaveImage($tempPicFile,_Clip_GetData($CF_BITMAP))

If @error Then MsgBox(48,"Error:", "Unable to create temporary file for image.")

GUICtrlSetImage($Pic,$tempPicFile)

If FileExists($tempPicFile) Then FileDelete($tempPicFile)

EndSelect

WEnd

[SmiLe]

Thank you for your reply Monamo. This is the method that I use in my script, but I'd like to know if there is another way to update the control without writing the image to a temporary file.

[Josbe]

Thank you for your reply Monamo. This is the method that I use in my script, but I'd like to know if there is another way to update the control without writing the image to a temporary file.

; Au3Lib is needed
#include <A3LGDIPlus.au3>
#include <A3LClipboard.au3>

If NOT _Clip_IsFormatAvailable($CF_BITMAP) Then
    MsgBox(0, "Error", "For test purposes, you will need some bitmap data in the clipboard")
    Exit
EndIf

Global $hBitmap, $hImage

$hGUI = GUICreate("My GUI", 400, 300)
GUISetState()

; Initialize GDI+ library
_GDIP_Startup()
; You need some bitmap data in you clipboard
$hBitmap = _Clip_GetData($CF_BITMAP) 
$hImage  = _GDIP_BitmapCreateFromHBITMAP($hBitmap)
$hGraphics = _GDIP_GraphicsCreateFromHWND($hGUI)
_GDIP_GraphicsDrawImage($hGraphics, $hImage, 10, 10)

do
    ;_GDIP_GraphicsDrawImage($hGraphics, $hImage, 10, 10) if you graphic disappear :P
until GUIGetMsg() = $GUI_EVENT_CLOSE

_GDIP_ImageDispose($hImage)
_API_DeleteObject($hBitmap)
; Shut down GDI+ library
_GDIP_ShutDown()

[SmiLe]

Very interesting, thank you!

(And yes, you're right, the image disappears without the the Do...Until loop.)

[Zedna]

Very interesting, thank you!

(And yes, you're right, the image disappears without the the Do...Until loop.)

Here is improved simpler way without GDI+ and it doesn't dissapear :-)

; Au3Lib is needed
#include <A3LClipboard.au3>

If NOT _Clip_IsFormatAvailable($CF_BITMAP) Then
    MsgBox(0, "Error", "For test purposes, you will need some bitmap data in the clipboard")
    Exit
EndIf

Global $hBitmap, $hImage

$hGUI = GUICreate("My GUI", 400, 300)
$pic1 = GUICtrlCreatePic("",0,0,400,300)
GUISetState()

; You need some bitmap data in you clipboard
$hBitmap = _Clip_GetData($CF_BITMAP) 
_SetBitmapToCtrl($pic1, $hBitmap)

do
until GUIGetMsg() = $GUI_EVENT_CLOSE

_API_DeleteObject($hBitmap)

Func _SetBitmapToCtrl($CtrlId, $hBitmap)
    Local Const $STM_SETIMAGE = 0x0172
    Local Const $IMAGE_BITMAP = 0

    Local $hWnd = GUICtrlGetHandle($CtrlId)
    If $hWnd = 0 Then Return SetError(1, 0, 0)
    DllCall("user32.dll", "hwnd", "SendMessage", "hwnd", $hWnd, "int", $STM_SETIMAGE, "int", $IMAGE_BITMAP, "int", $hBitmap)
    If @error Then Return SetError(2, 0, 0)
    Return 1
EndFunc

Nice original example Josbe

[SmOke_N]

Here is improved simpler way without GDI+ and it doesn't dissapear :-)

; Au3Lib is needed
#include <A3LClipboard.au3>

If NOT _Clip_IsFormatAvailable($CF_BITMAP) Then
    MsgBox(0, "Error", "For test purposes, you will need some bitmap data in the clipboard")
    Exit
EndIf

Global $hBitmap, $hImage

$hGUI = GUICreate("My GUI", 400, 300)
$pic1 = GUICtrlCreatePic("",0,0,400,300)
GUISetState()

; You need some bitmap data in you clipboard
$hBitmap = _Clip_GetData($CF_BITMAP) 
_SetBitmapToCtrl($pic1, $hBitmap)

do
until GUIGetMsg() = $GUI_EVENT_CLOSE

_API_DeleteObject($hBitmap)

Func _SetBitmapToCtrl($CtrlId, $hBitmap)
    Local Const $STM_SETIMAGE = 0x0172
    Local Const $IMAGE_BITMAP = 0

    Local $hWnd = GUICtrlGetHandle($CtrlId)
    If $hWnd = 0 Then Return SetError(1, 0, 0)
    DllCall("user32.dll", "hwnd", "SendMessage", "hwnd", $hWnd, "int", $STM_SETIMAGE, "int", $IMAGE_BITMAP, "int", $hBitmap)
    If @error Then Return SetError(2, 0, 0)
    Return 1
EndFunc

Nice original example Josbe

I'm sure you did, but I want to ask... did you confirm this working first... because I get nothing.

[Zedna]

I'm sure you did, but I want to ask... did you confirm this working first... because I get nothing.

It's really working fine on my machine.

Note: For Auto3Library you must run it under release version 3.2.8.1 (not latest beta)

EDIT:

Does original example from Josbe works OK on your machine?

and notice you must have some bitmap in clipboard before you run this script

Edited November 15, 2007 by Zedna

[SmOke_N]

It's really working fine on my machine.

Note: For Auto3Library you must run it under release version 3.2.8.1 (not latest beta)

EDIT:

Does original example from Josbe works OK on your machine?

and notice you must have some bitmap in clipboard before you run this script

I was running 3.2.8.1

>Running:(3.2.8.1)

And yes Josbe's worked... (Used print screen before running )

[Malkey]

Updated example to run on v3.2.10.0 and v3.2.11.10 (beta).

Zedna example to load bitmap from clipboard to Control without using GDI+

expandcollapse popup

; 
#include <Clipboard.au3>
#include <WinAPI.au3>
#include <GuiConstants.au3>

If Not _ClipBoard_IsFormatAvailable ($CF_BITMAP) Then
    MsgBox(0, "Error", "For test purposes, you will need some bitmap data in the clipboard")
    Exit
EndIf

Global $hBitmap, $hImage

$hGUI = GUICreate("My GUI", 400, 300)
$pic1 = GUICtrlCreatePic("", 0, 0, 400, 300)
GUISetState()

; You need some bitmap data in you clipboard
$hBitmap = _ClipBoard_GetData ($CF_BITMAP)
_SetBitmapToCtrl($pic1, $hBitmap)

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

_WinAPI_DeleteObject ($hBitmap)

Func _SetBitmapToCtrl($CtrlId, $hBitmap)
    Local Const $STM_SETIMAGE = 0x0172
    Local Const $IMAGE_BITMAP = 0

    Local $hWnd = GUICtrlGetHandle($CtrlId)
    If $hWnd = 0 Then Return SetError(1, 0, 0)
    DllCall("user32.dll", "hwnd", "SendMessage", "hwnd", $hWnd, "int", $STM_SETIMAGE, "int", $IMAGE_BITMAP, "int", $hBitmap)
    If @error Then Return SetError(2, 0, 0)
    Return 1
EndFunc   ;==>_SetBitmapToCtrloÝ÷ Ø,mç±jjezÚ%¡§[Ù¥úèÉb¥º­ÛhB.²)à2ëºÚ"µÍÂÚ[ÛYH    ÐÛØ]LÉÝÂÚ[ÛYH   ÑÝZPÛÛÝ[Ë]LÉÝÂÚ[ÛYH  ÕÚ[TK]LÉÝÂÚ[ÛYH  ÑÑTË]LÉÝÂYÝÐÛØÒÑÜX]]Z[XH
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Don't forget to put a bitmap on clipboard. You can do as SmOke_N did, use print screen before running.

[Malkey]

A modified Josbe script.

Runs on v3.2.11.10 (beta) and I think v3.2.11.8 (beta) or you can add the _GDIPlus_DrawImagePoints() function from

http://www.autoitscript.com/forum/index.ph...st&p=495862

Adding the _GDIPlus_DrawImagePoints() function would make it current version v3.2.10.0 compatiable.

The difference with this example is that the bitmap auto-resizes with the GUI resize.

It's slow to exit though.

expandcollapse popup

;
; Run on v3.2.11.10 (beta) or previous Beta Version
; Must have _GDIPlus_DrawImagePoints()function or add to this script from
; http://www.autoitscript.com/forum/index.php?s=&showtopic=66993&view=findpost&p=495862
#include <WindowsConstants.au3>
#include <Clipboard.au3>
#include <GuiConstants.au3>
#include <WinAPI.au3>
#include <GDIPlus.au3>

Local $WPos, $hBitmap, $hImage, $hGraphics, $Flag = 0
Opt("PixelCoordMode", 0)

If Not _ClipBoard_IsFormatAvailable ($CF_BITMAP) Then
    Send("{PRINTSCREEN}")
EndIf

$hGUI = GUICreate("My GUI", 400, 300, -1, -1, $WS_SIZEBOX)

GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            ExitLoop
        Case $GUI_EVENT_RESIZED Or $Flag = 0
            $WPos = WinGetPos("")
            $Flag = 1
            $hBitmap = _ClipBoard_GetData ($CF_BITMAP)
            _GDIPLUS_Startup ()
            $hImage = _GDIPLUS_BitmapCreateFromHBITMAP ($hBitmap)
            $hGraphics = _GDIPLUS_GraphicsCreateFromHWND ($hGUI)
            _GDIPlus_DrawImagePoints ($hGraphics, $hImage, 0, 0, $WPos[2], 0, 0, $WPos[3])
            _GDIPLUS_ImageDispose ($hImage)
            _WinAPI_DeleteObject ($hBitmap)
            _GDIPlus_GraphicsDispose ($hGraphics)
            _GDIPLUS_ShutDown ()
    EndSwitch
WEnd

[ProgAndy]

This should be extended (Delete the old Bitmap)

Func _SetBitmapToCtrl($CtrlId, $hBitmap)
    Local Const $STM_SETIMAGE = 0x0172
    Local Const $IMAGE_BITMAP = 0

    Local $hWnd = GUICtrlGetHandle($CtrlId)
    If $hWnd = 0 Then Return SetError(1, 0, 0)
    Local $oldBmp = DllCall("user32.dll", "hwnd", "SendMessage", "hwnd", $hWnd, "int", $STM_SETIMAGE, "int", $IMAGE_BITMAP, "int", $hBitmap)
    If @error Then Return SetError(2, 0, 0)
    If $oldBmp[0] <> 0 Then DllCall("GDI32.dll", "int", "DeleteObject", "int", $oldBmp[0])
    Return 1
EndFunc   ;==>_SetBitmapToCtrl

[smashly]

A modified Josbe script.

Runs on v3.2.11.10 (beta) and I think v3.2.11.8 (beta) or you can add the _GDIPlus_DrawImagePoints() function from

http://www.autoitscript.com/forum/index.ph...st&p=495862

Adding the _GDIPlus_DrawImagePoints() function would make it current version v3.2.10.0 compatiable.

The difference with this example is that the bitmap auto-resizes with the GUI resize.

It's slow to exit though.

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PS this code would need beta autoit v3.2.11.X to run due to using "_GDIPlus_GraphicsDrawImageRect()" function.

It would work with autoit 3.2.10.0 if you swap the "_GDIPlus_GraphicsDrawImageRect()" function for _GDIPlus_DrawImagePoints() instead. (as you've already said)

Cheers

[Malkey]

Well done smashly, brilliant - Must Better.

Now, with ProgAndy's solution to putting an image onto clipboard @

http://www.autoitscript.com/forum/index.ph...st&p=514764

Your script, Zedna, and Josbe scripts can get an image off clipboard. That's handy.

[Zedna]

This should be extended (Delete the old Bitmap)

Func _SetBitmapToCtrl($CtrlId, $hBitmap)
    Local Const $STM_SETIMAGE = 0x0172
    Local Const $IMAGE_BITMAP = 0

    Local $hWnd = GUICtrlGetHandle($CtrlId)
    If $hWnd = 0 Then Return SetError(1, 0, 0)
    Local $oldBmp = DllCall("user32.dll", "hwnd", "SendMessage", "hwnd", $hWnd, "int", $STM_SETIMAGE, "int", $IMAGE_BITMAP, "int", $hBitmap)
    If @error Then Return SetError(2, 0, 0)
    If $oldBmp[0] <> 0 Then DllCall("GDI32.dll", "int", "DeleteObject", "int", $oldBmp[0])
    Return 1
EndFunc   ;==>_SetBitmapToCtrl

Yes you are right. I will incorporate this into my next resources UDF

This function comes from there (original from Larry)

Edited May 1, 2008 by Zedna

[Zedna]

To reduce CPU time when redrawing the image on a resize event

(80% ~ 100% cpu spike on my old 1.73Ghz laptop when running the above code)

1) You could maybe leave _GDIPlus running while the script is active, instead of starting and stopping _GDIPlus on every event. As long as your disposing of the resources before creating a new resource then I don't think gdi will blow out the memory to much.

2) Maybe use the WM_PAINT msg with GUIRegisterMsg to redraw the gdi image.

Doing those 2 things gets rid of the cpu spiking on resize events at the trade off of minimal extra memory usage.

expandcollapse popup

#include <WindowsConstants.au3>
#include <Clipboard.au3>
#include <GuiConstants.au3>
#include <WinAPI.au3>
#include <GDIPlus.au3>

Global $hGraphics, $hBitmap, $hImage, $hGraphics

If Not _ClipBoard_IsFormatAvailable ($CF_BITMAP) Then
    Send("{PRINTSCREEN}")
EndIf
$hBitmap = _ClipBoard_GetData ($CF_BITMAP)

_GDIPLUS_Startup ()           
$hImage = _GDIPLUS_BitmapCreateFromHBITMAP ($hBitmap)

$hGUI = GUICreate("My GUI", 400, 300, -1, -1, $WS_SIZEBOX)
GUIRegisterMsg($WM_PAINT, "WM_PAINT")
GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            _GDIPLUS_ImageDispose ($hImage)
            _WinAPI_DeleteObject ($hBitmap)
            _GDIPLUS_ShutDown()
            Exit
        Case Else
            ;;;;
    EndSwitch
WEnd

Func WM_PAINT($hWnd, $Msg)
    _WinAPI_RedrawWindow($hWnd, 0, 0, $RDW_UPDATENOW)
    Local $WPos = WinGetPos($hGUI)
    $hGraphics = _GDIPLUS_GraphicsCreateFromHWND ($hGUI)
    _GDIPlus_GraphicsDrawImageRect($hGraphics, $hImage, 0, 0, $WPos[2], $WPos[3])
    _GDIPlus_GraphicsDispose ($hGraphics)
    _WinAPI_RedrawWindow($hWnd, 0, 0, $RDW_VALIDATE)
    Return $GUI_RUNDEFMSG
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Edited May 1, 2008 by Zedna

[smashly]

Hi Zedna,

Problem..

>Running:(3.2.11.9):C:\Program Files\AutoIt3\beta\autoit3.exe "C:\AutoIt Stuff\werry.au3"   
!>23:14:48 AutoIT3.exe ended.rc:-1073741819
>Exit code: -1073741819 Time: 6.155

I gather that's because your puting

$hGraphics = _GDIPLUS_GraphicsCreateFromHWND ($hGUI)oÝ÷ Ù§íz¶®¶­sduT&Vv7FW$×6rb33cµtÕõåBÂgV÷CµtÕõåBgV÷C²oÝ÷ Ù©Ýjëh×6_GDIPlus_GraphicsDrawImageRect($hGraphics, $hImage, 0, 0, $WPos[2], $WPos[3])

is calling $hGraphics before it's been generated.

Cheers

[smashly]

I also noticed moving the "$hGraphics = _GDIPLUS_GraphicsCreateFromHWND ($hGUI)" outside of the WM_PAINT function seems to make the image not scale to the screen correctly when you resize, that's why I had it and the _GDIPlus_GraphicsDispose ($hGraphics) inside the WM_PAINT function.

Cheers

Edited May 1, 2008 by smashly

[Zedna]

@smashly: I noticed that too and I corrected my script before your posts already

[smashly]

Hi again Zedna

But from the modification you've done it still is buggy.

When you resize the window the image doesn't strech to the windows edges.

Also from moving the GUIRegisterMsg($WM_PAINT, "WM_PAINT") to after the GUISetState() then the image isn't displayed till the window is tampered with.

I think the way I had it to start with is more compatable (even though the code layout is ugly).

But to each his own.

Cheers

Edited May 1, 2008 by smashly