Question about GDIPlus

[AlmarM]

Hiya!

I have a question about GDIPlus (I guess).

Let's say I load a picture into my GUI as background image, is there a way to lowers its contrast?

I never used GDIPlus so I have no idea if that could help me.

Any help, tips, examples are appreciated.

AlmarM

[Yashied]

Contrast or transparency?

See exapmle for _WinAPI_AlphaBlend() from WinAPIEx.au3.

Edited May 24, 2010 by Yashied

[AlmarM]

Contrast or transparency?

See exapmle for _WinAPI_AlphaBlend() from WinAPIEx.au3.

Something like this.

Also, why can't I just use "CTRL + A" in GUICtrlCreateEdit to select all? Is there anything like WM_SELECTALL ?

Woosh, fast replies ftw.

[Yashied]

Use FreeImage.au3.

Also, why can't I just use "CTRL + A" in GUICtrlCreateEdit to select all? Is there anything like WM_SELECTALL?

No. Look at GUISetAccelerators() and _GUICtrlEdit_SetSel(). Edited May 24, 2010 by Yashied

[Richard Robertson]

If you want to "wash out" the image, there are any number of ways to do this. The easiest is obviously to modify the picture beforehand.

If you want to have it dynamic though, you should save a copy of the image to say the temp folder, in a location where you could open it again if the same image were selected.

A way you could do this is to enumerate all pixels (LockBits first, don't try using GetPixel and SetPixel, they are too slow) and simply slide them all toward black a bit. If you would like, I could whip up an example.

Edit: The FreeImage UDF would probably be faster.

Edited May 24, 2010 by Richard Robertson

[AlmarM]

Oki! *Looks at _GUICtrlEdit_SetSel()*

[UEZ]

Have a look to the great GDIp.au3 UDF by Authenticity! You will find a lot of GDI+ functions!

BR,

UEZ