Drawing a picture in a resisable GUI (Watch video)

[dirty]

Picture is created in a function called when user clicks on Listviewitem.

Here is how it gets called:

If $GUIGetMsg = $GetClickedItem Then ;Show Selected
        If $GetClickedItem = 0 Then
        ElseIf $GetClickedItem = "" Then
        ElseIf $GetClickedItem > "" Then
            DisplaySelected()
        EndIf
    EndIf

Func DisplaySelected()

;many lines of code to format the string from selected listviewitem to isolate path to picture

DrawPicture()

Endfunc

Here is the Picture Function

Func DrawPicture();Drap picture
Local $PATHCheck,$PATHEMPTY,$PATHFILEERROR,$PATH,$IMG,$W,$H
Local $ImageWidth,$ImageHeight,$AreaWidth,$AreaHeight,$Scale,$NewImageWidth,$NewImageHeight
GUICtrlDelete($Image) ;delete any previous images
$PATHCheck = GUICtrlRead($MainImagePath) ;returns full image path
$PATHEMPTY = (@TempDir & "\NoPicture.jpg")
$PATHFILEERROR = (@TempDir & "\PictureError.jpg")
If $PATHCheck = "" Then ;No Image
  $PATH = (@TempDir & "\NoPicture.jpg")
ElseIf $PATHCheck > "" And FileExists($PATHCheck) = 0 Then
  $PATH = (@TempDir & "\PictureError.jpg")
ElseIf $PATHCheck > "" And FileExists($PATHCheck) = 1 Then
  $PATH = $PATHCheck
EndIf
If Not @error Then
  _GDIPlus_Startup()
  $IMG = _GDIPlus_ImageLoadFromFile($PATH)
  $W = _GDIPlus_ImageGetWidth($IMG)
  $H = _GDIPlus_ImageGetHeight($IMG)
  _GDIPlus_ImageDispose($IMG)
  _GDIPlus_Shutdown()
  ;MsgBox(0,$PATH,$W & @CRLF & $H) ;size of an amage
EndIf
$ImageWidth = $W
$ImageHeight = $H
$AreaWidth = 440
$AreaHeight = 325
$Scale = _Min($AreaWidth / $ImageWidth, $AreaHeight / $ImageHeight)
$NewImageWidth = $ImageWidth * $Scale
$NewImageHeight = $ImageHeight * $Scale
$Image = GUICtrlCreatePic($PATH, 505, 410, Round($NewImageWidth), Round($NewImageHeight)) ;This one is global
;GUICtrlSetResizing (-1,1)
EndFunc   ;==>DrawPicture

I dont understand why: if GUICtrlSetResizing (-1,1) is used in DrawPicture() right after its created is not working

Is there a way to change it ?

I thinki need to change how the positioning of the picture is effected by resized gui, but i dont know how to do that.

$Image = GUICtrlCreatePic($PATH, 505, 410, Round($NewImageWidth), Round($NewImageHeight)); This cant be right, 505 and 410 change when u resize window, so how do i change those while window is getting resized and other components such as big vertical button on the right also get scaled ?

Watch this video and see

http://www.youtube.com/watch?v=K0E3JoMkoPM

[martin]

Initial question - Why is the position of the created Pic fixed when the window is a varying size?

[dirty]

because original gui was not resistible, but not it is and i dont know how to make it follow the gui size changes.

[martin]

You need to set the position of the image depending on the position of other controls. If you have a handler for WM_SIZE then you can calculate new positions every time the window is resized. (Or WM_EXITSIZEMOVE maybe).

Since I can't remember your window layout I'm not sure of some details. If the original pic resizes ok and the problem only occurs when you replace it then before you delete the old pic get its position and size and use that for the new pic. Or, instead of deleting the pic and creating a new one just set the new image to the pic using GuiCtrlSetImage.

[dirty]

can u give me an example of 1st part of your reply with WM_SIZE Or WM_EXITSIZEMOVE, am not sure how to start.

I also did try creating new one instead of deleting the old and then recreating it, but the problem was that the old picture would not be deleted and the new one gets created on top (not good) so i ended up deleting the control.

[martin]

I expect searching would find a few examples, but

[dirty]

i am not trying to resize child and parent window together, i am resizing control that is displayed in one window (no children yet, my code has not found its significant other)

so what ever is posted there is little off topic, but thanks i can learn allot from that link for future projects

Edited November 8, 2011 by dirty