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ActualAkshay

Creating a blank image of specific hex color code?

3 posts in this topic

wanted to know if theres a way to create a blank image of specific color code using au3 only,

for example, wanted to make blank jpg pic of hex code 004488 using au3 only, how can it be done?

post-72083-0-20054700-1361515686_thumb.j

and second question is, how to place a transparent png over another picture and save it as jpg (or any other format)?

post-72083-0-20054700-1361515686_thumb.j + post-72083-0-65293700-1361515690_thumb.p = post-72083-0-17465500-1361515696_thumb.j

3rd, how to convert png to jpg?

:bye:

Regards,

Akshay

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#2 ·  Posted (edited)

Here a litte code example:

#include <GUIConstantsEx.au3>
#include <GDIPlus.au3>

_GDIPlus_Startup()
Global Const $hGUI = GUICreate("GDI+ Test", 300, 300)
Global Const $iPic = GUICtrlCreatePic("", 100, 100, 100, 100)
Global Const $hPic = GUICtrlGetHandle($iPic)
GUISetBkColor(0x000000, $hGUI)
GUISetState()

#region GDI+

;create an empty bitmap
Global Const $iWidth = 100, $iHeight = 100 ;dimension of the bitmap
Global Const $iStride = 0, $pScan0 = 0, $iPixelFormat = $GDIP_PXF32ARGB ;some bitmap parameters
Global $aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromScan0", "int", $iWidth, "int", $iHeight, "int", $iStride, "int", $iPixelFormat, "ptr", $pScan0, "int*", 0)
Global Const $hBitmap = $aResult[6] ;this is the handle of the new empty bitmap
Global Const $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap) ;create a context to the bitmap handle to do some GDI+ operations
Global Const $iBgColor = 0xFF004488 ;define background color -> ARGB
_GDIPlus_GraphicsClear($hContext, $iBgColor) ;clear empty bitmap with new color

Global Const $hImage = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\Step_2_In.png") ;load a transparent PNG image which should be placed on the bitmap
_GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $iWidth, $iHeight) ;copy the image onto the bitmap. if image dimension <> bitmap dimension than the image will be displayed deformed

;save result as JPG and PNG (conversation is done automatically)
_GDIPlus_ImageSaveToFile($hBitmap, @ScriptDir & "\New_Image.jpg")
_GDIPlus_ImageSaveToFile($hBitmap, @ScriptDir & "\New_Image.png")

;let's display the new created bitmap in the GUI
Global Const $hGraphics = _GDIPlus_GraphicsCreateFromHWND($hPic)
_GDIPlus_GraphicsDrawImageRect($hGraphics, $hBitmap, 0, 0, 100, 100)

#endregion

Do
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            _GDIPlus_ImageDispose($hImage) ;release image
            _GDIPlus_BitmapDispose($hBitmap) ;release bitmap
            _GDIPlus_GraphicsDispose($hContext)
            _GDIPlus_GraphicsDispose($hGraphics)
            _GDIPlus_Shutdown()
            GUIDelete()
            Exit
    EndSwitch
Until False

Br,

UEZ

Edited by UEZ
1 person likes this

Please don't send me any personal message and ask for support! I will not reply!

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#3 ·  Posted (edited)

Oh thanks a lot yay!~ :thumbsup:

Edited by ActualAkshay

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