Results 1 to 30 of 30

Thread: Paint PNGs via DrawIconEx()

  1. #1

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Paint PNGs via DrawIconEx()

    Use WIA 2.0 and an ImageList to load a PNG file as a StdPicture. Then draw using DrawIconEx(), which seems to hold the alchemy here.

    Code:
    Option Explicit
    
    Private Const WIN32_NULL As Long = 0
    
    Private Enum DI_FLAGS
        DI_MASK = &H1&
        DI_IMAGE = &H2&
        DI_NORMAL = &H3&
        DI_COMPAT = &H4&
        DI_DEFAULTSIZE = &H8&
        DI_NOMIRROR = &H10&
    End Enum
    
    Private Declare Function DrawIconEx Lib "user32" ( _
        ByVal hDC As Long, _
        ByVal xLeft As Long, _
        ByVal yTop As Long, _
        ByVal hIcon As Long, _
        ByVal cxWidth As Long, _
        ByVal cyWidth As Long, _
        ByVal istepIfAniCur As Long, _
        ByVal hbrFlickerFreeDraw As Long, _
        ByVal diFlags As DI_FLAGS) As Long
    
    Private PngAsIcon As StdPicture
    Private WidthPx As Long
    Private HeightPx As Long
    Private Coords As Collection
    
    Private Sub Backdrop()
        Dim I As Single
    
        For I = 0 To ScaleWidth Step ScaleX(15, vbPixels)
            Line (I, 0)-(I, ScaleHeight), &HC0E0C0
        Next
        For I = 0 To ScaleHeight Step ScaleX(15, vbPixels)
            Line (0, I)-(ScaleWidth, I), &HFFC0C0
        Next
    End Sub
    
    Private Sub DrawCenteredAt(ByVal X As Single, ByVal Y As Single)
        DrawIconEx hDC, _
                   ScaleX(X, ScaleMode, vbPixels) - WidthPx \ 2, _
                   ScaleY(Y, ScaleMode, vbPixels) - HeightPx \ 2, _
                   PngAsIcon.Handle, _
                   WidthPx, _
                   HeightPx, _
                   0, _
                   WIN32_NULL, _
                   DI_NORMAL
    End Sub
    
    Private Sub Form_Load()
        With New WIA.ImageFile
            .LoadFile "GlassBall.png"
            WidthPx = .Width
            HeightPx = .Height
            ImageList1.ImageWidth = WidthPx
            ImageList1.ImageHeight = HeightPx
            ImageList1.ListImages.Add , , .FileData.Picture()
        End With
        Set PngAsIcon = ImageList1.ListImages.Item(1).ExtractIcon()
        ImageList1.ListImages.Clear
        Set Coords = New Collection
        BackColor = &HF0F0FF
        DrawWidth = 2
    End Sub
    
    Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
        DrawCenteredAt X, Y
        Coords.Add Array(X, Y)
    End Sub
    
    Private Sub Form_Resize()
        Dim Coord As Variant
        
        If WindowState <> vbMinimized Then
            Cls
            Backdrop
            For Each Coord In Coords
                DrawCenteredAt Coord(0), Coord(1)
            Next
        End If
    End Sub
    Name:  sshot.png
Views: 557
Size:  11.7 KB
    Attached Files Attached Files

  2. #2

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Minor rewrite for clarity:

    Code:
    Private Sub Form_Load()
        With New WIA.ImageFile
            .LoadFile "GlassBall.png"
            WidthPx = .Width
            HeightPx = .Height
            ImageList1.ListImages.Add , , .FileData.Picture()
        End With
        With ImageList1.ListImages
            Set PngAsIcon = .Item(1).ExtractIcon()
            .Clear
        End With
        Set Coords = New Collection
        BackColor = &HF0F0FF
        DrawWidth = 2
    End Sub
    Another rewrite showing loading from a Byte array instead of a file:

    Code:
    Private Sub Form_Load()
        With New WIA.Vector
            .BinaryData = LoadResData("GLASSBALL", "PNG")
            With .ImageFile
                WidthPx = .Width
                HeightPx = .Height
            End With
            ImageList1.ListImages.Add , , .Picture()
        End With
        With ImageList1.ListImages
            Set PngAsIcon = .Item(1).ExtractIcon()
            .Clear
        End With
        Set Coords = New Collection
        BackColor = &HF0F0FF
        DrawWidth = 2
    End Sub
    It helps to have the CHM Help from the WIA 2.0 SDK, but if you failed to download it before Microsoft removed it you might have to search it out from less reputable sources.

  3. #3
    PowerPoster wqweto's Avatar
    Join Date
    May 2011
    Posts
    2,582

    Re: Paint PNGs via DrawIconEx()

    With this CopyDibToIcon function it might be possible to emulate ExtractIcon method

    Code:
    Option Explicit
    
    Private Declare Function APIGetObject Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long
    Private Declare Function CreateBitmap Lib "gdi32" (ByVal nWidth As Long, ByVal nHeight As Long, ByVal nPlanes As Long, ByVal nBitCount As Long, lpBits As Any) As Long
    Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
    Private Declare Function CreateIconIndirect Lib "user32" (pIconInfo As ICONINFO) As Long
    Private Declare Function DestroyIcon Lib "user32" (ByVal hIcon As Long) As Long
    Private Declare Function OleCreatePictureIndirect Lib "oleaut32" (lpPictDesc As PICTDESC, riid As Any, ByVal fPictureOwnsHandle As Long, pUnk As IUnknown) As Long
    
    Private Type BITMAP
        bmType              As Long
        bmWidth             As Long
        bmHeight            As Long
        bmWidthBytes        As Long
        bmPlanes            As Integer
        bmBitsPixel         As Integer
        bmBits              As Long
    End Type
    
    Private Type ICONINFO
        fIcon               As Long
        xHotspot            As Long
        yHotspot            As Long
        hbmMask             As Long
        hbmColor            As Long
    End Type
    
    Private Type PICTDESC
        lSize               As Long
        lType               As Long
        hBmp                As Long
        hPal                As Long
    End Type
    
    Public Function CopyDibToIcon(ByVal hDib As Long) As StdPicture
        Dim uBmp            As BITMAP
        Dim uInfo           As ICONINFO
        Dim hIcon           As Long
        Dim uDesc           As PICTDESC
        Dim IID_IUnknown(0 To 1) As Currency
        
        If APIGetObject(hDib, Len(uBmp), uBmp) = 0 Then
            GoTo QH
        End If
        With uInfo
            .fIcon = 1
            .hbmColor = hDib
            .hbmMask = CreateBitmap(uBmp.bmWidth, uBmp.bmHeight, 1, 1, ByVal 0)
        End With
        hIcon = CreateIconIndirect(uInfo)
        With uDesc
            .lSize = Len(uDesc)
            .lType = vbPicTypeIcon
            .hBmp = hIcon
        End With
        IID_IUnknown(1) = 504403158265495.5712@
        If OleCreatePictureIndirect(uDesc, IID_IUnknown(0), 1, CopyDibToIcon) <> 0 Then
            GoTo QH
        End If
        hIcon = 0
    QH:
        If hIcon <> 0 Then
            Call DestroyIcon(hIcon)
        End If
        If uInfo.hbmMask <> 0 Then
            Call DeleteObject(uInfo.hbmMask)
        End If
    End Function
    Can be used with something like this

    Code:
        With New WIA.ImageFile
            .LoadFile "GlassBall.png"
            Set PngAsIcon = CopyDibToIcon(.FileData.Picture.Handle)
        End With
    cheers,
    </wqw>

  4. #4
    Fanatic Member
    Join Date
    May 2014
    Location
    Kallithea Attikis, Greece
    Posts
    1,012

    Re: Paint PNGs via DrawIconEx()

    You can use AutoRedraw=True, for double buffer. So using Refresh at specific time we can make animations.

  5. #5

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    More stunts along the same lines:

    Code:
    Option Explicit
    
    Private Const BM_SETIMAGE As Long = &HF7&
    Private Const IMAGE_ICON As Long = 1&
    
    Private Declare Function SendMessage Lib "user32" Alias "SendMessageW" ( _
        ByVal hWnd As Long, _
        ByVal wMsg As Long, _
        ByVal wParam As Long, _
        ByVal lParam As Long) As Long
    
    Private Const GWL_STYLE As Long = -16&
    
    Private Enum BS_TEXTPOS_STYLES
        [_BS_TEXTPOSMASK] = &HF00&
        BS_LEFT = &H100&
        BS_RIGHT = &H200&
        BS_CENTER = &H300&
        BS_TOP = &H400&
        BS_BOTTOM = &H800&
        BS_VCENTER = &HC00&
    End Enum
    
    Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongW" ( _
        ByVal hWnd As Long, _
        ByVal nIndex As Long) As Long
    
    Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongW" ( _
        ByVal hWnd As Long, _
        ByVal nIndex As Long, _
        ByVal dwNewLong As Long) As Long
    
    Private Sub IconizeButton( _
        ByVal CommandButton As CommandButton, _
        Optional ByVal Position As BS_TEXTPOS_STYLES = BS_CENTER)
        'Assumes the CommandButton has an icon as its Picture property.
        Dim NewStyle As Long
        
        With CommandButton
            NewStyle = GetWindowLong(.hWnd, GWL_STYLE) And Not [_BS_TEXTPOSMASK] Or Position
            SetWindowLong .hWnd, GWL_STYLE, NewStyle
            SendMessage .hWnd, BM_SETIMAGE, IMAGE_ICON, .Picture.Handle
        End With
    End Sub
    
    Private Sub Backdrop()
        Dim I As Single
    
        For I = 0 To ScaleWidth Step ScaleX(15, vbPixels)
            Line (I, 0)-(I, ScaleHeight), &HC0E0C0
        Next
        For I = 0 To ScaleHeight Step ScaleX(15, vbPixels)
            Line (0, I)-(ScaleWidth, I), &HFFC0C0
        Next
    End Sub
    
    Private Sub Form_Load()
        Dim PngIcon As StdPicture
    
        With New WIA.Vector
            'Use a 32x32 image, the largest size for a normal MouseIcon (cursor):
            .BinaryData = LoadResData("TRIANGLE", "PNG")
            ImageList1.ListImages.Add , , .Picture()
        End With
        With ImageList1.ListImages
            Set PngIcon = .Item(1).ExtractIcon()
            .Clear
        End With
        'Because we are using an icon rather than a cursor we can't specify the hotspot
        'so it will be at the center:
        Set MouseIcon = PngIcon
        MousePointer = vbCustom
        'Now we'll just reuse the image for some CommandButton controls.  These could
        'be other sizes.  A CC6 manifest is required or you won't see the icons:
        Set Command1.Picture = PngIcon
        IconizeButton Command1, BS_LEFT
        Set Command2.Picture = PngIcon
        IconizeButton Command2, BS_RIGHT
        Set Command3.Picture = PngIcon
        IconizeButton Command3, BS_CENTER Or BS_TOP
        BackColor = &HF0F0FF
        DrawWidth = 2
    End Sub
    
    Private Sub Form_Resize()
        If WindowState <> vbMinimized Then
            Cls
            Backdrop
        End If
    End Sub
    Name:  sshot.png
Views: 446
Size:  3.7 KB

    Triangle cursor over button
    Attached Files Attached Files

  6. #6

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Even simpler way to replace the ImageList:

    MakeIcon.cls:
    Code:
    Option Explicit
    '
    'VB_PredeclaredId = True so we have a global instance
    '
    
    Private Const WIN32_FALSE As Long = 0
    Private Const WIN32_TRUE As Long = Not WIN32_FALSE
    
    Private Type IID
        Data1 As Long
        Data2 As Integer
        Data3 As Integer
        Data4(0 To 7) As Byte
    End Type
    
    Private Declare Function CLSIDFromString Lib "ole32" ( _
        ByVal lpsz As Long, _
        ByRef clsid As IID) As Long
    
    Private Type ICONINFO
        fIcon As Long
        xHotspot As Long
        yHotspot As Long
        hbmMask As Long
        hbmColor As Long
    End Type
    
    Private Declare Function CreateIconIndirect Lib "user32" (ByRef piconinfo As ICONINFO) As Long
    
    Private Type PICTDESC_ICO
        cbSizeofStruct As Long
        picType As Long
        hIcon As Long
    End Type
    
    Private Declare Function OleCreatePictureIndirect Lib "olepro32" ( _
        ByRef PICTDESC_ICO As PICTDESC_ICO, _
        ByRef riid As IID, _
        ByVal fOwn As Long, _
        ByRef IPic As IPicture) As Long
    
    Private IID_IPicture As IID
    
    Public Property Get Solid(ByVal BitmapPicture As StdPicture) As IPicture
        Dim ICONINFO As ICONINFO
        Dim hIcon As Long
        Dim PICTDESC As PICTDESC_ICO
    
        With ICONINFO
            .fIcon = WIN32_TRUE
            .hbmMask = BitmapPicture.Handle
            .hbmColor = BitmapPicture.Handle
        End With
        hIcon = CreateIconIndirect(ICONINFO)
        If hIcon <> 0 Then
            With PICTDESC
               .cbSizeofStruct = Len(PICTDESC)
               .picType = vbPicTypeIcon
               .hIcon = hIcon
            End With
            OleCreatePictureIndirect PICTDESC, _
                                     IID_IPicture, _
                                     WIN32_TRUE, _
                                     Solid
        End If
    End Property
    
    Private Sub Class_Initialize()
        CLSIDFromString StrPtr("{7BF80980-BF32-101A-8BBB-00AA00300CAB}"), IID_IPicture
    End Sub
    I have no idea why I had named the property "Solid" here though, or why it wasn't a method instead. Function "FromBitmap" would make more sense.
    Attached Files Attached Files
    Last edited by dilettante; Nov 10th, 2020 at 08:58 PM.

  7. #7

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    One more time.

    No ImageList, no WIA, and no (explicit) GDI+ though some of the GDI icon entrypoints used here may well employ GDI+ under the covers much as WIA 2.0 does.

    If you only need to load-then-paint a PNG you can even skip the conversion to an icon-type StdPicture. Just be sure you manually DestroyIcon() then.
    Attached Files Attached Files

  8. #8
    PowerPoster wqweto's Avatar
    Join Date
    May 2011
    Posts
    2,582

    Re: Paint PNGs via DrawIconEx()

    Nice!

    Just tested the sample project and GDI+ is not loaded in process address space. Instead I got this

    Code:
    IconCodecService.dll, 0x6a360000, 32 kB, Converts a PNG part of the icon to a legacy bmp icon, 11.5 kB, C:\Windows\SysWOW64\IconCodecService.dll
    So they have *another* PNG decoder incl. Deflate decompression implemented just for them icons.

    cheers,
    </wqw>

  9. #9

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Nice find, and pretty cool!

  10. #10

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    I know LaVolpe had explored PNG support via icons earlier. For all I know I've merely parroted him in a slow and bumbling manner here. Perhaps he will see this and weigh in. I wasn't trying to reinvent any wheels or take credit for being particularly clever about this.

  11. #11

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    One last demo using the "no WIA, no ImageList, no GDI+" to draw a PNG with alpha transparency.

    This one is a user-draggable UserControl.

    Name:  sshot.png
Views: 407
Size:  6.3 KB

    The PNG shows as a little rough because I had resized it down from a larger image.

    Most of the attachment size is from images.
    Attached Files Attached Files

  12. #12

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Does this work as far back as Windows Vista? Or maybe Windows 8.1?

    Only tested on Windows 10.

  13. #13
    PowerPoster wqweto's Avatar
    Join Date
    May 2011
    Posts
    2,582

    Re: Paint PNGs via DrawIconEx()

    Yes, this works on Vista but does *not* work on XP (tested on both). Loading PNGs with GDI+, converting to 32-bit premultiplied alpha DIBs and painting these with AlphaBlend does work on XP though.

    For anything before XP there is no GDI+ available though AlphaBlend API *is* available since Win2000 and of course all hope is lost on NT4 where both are missing.

    (I recently found out that even SetStretchBltMode to HALFTONE does *not* interpolate bitmaps upon downsizing on NT4, so no cheap SSAA (supersampling anti-aliasing) is available there too. HALFTONE stretching needs Win2000 video drivers at least.)

    cheers,
    </wqw>

  14. #14

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Found this in old docs:

    GDI+ is available as a redistributable for Windows NT 4.0 SP6, Windows 2000, Windows 98, and Windows Me.
    I think it was also installed along with IE4+ on old OSs.

  15. #15
    PowerPoster wqweto's Avatar
    Join Date
    May 2011
    Posts
    2,582

    Re: Paint PNGs via DrawIconEx()

    Quote Originally Posted by dilettante View Post
    I think it was also installed along with IE4+ on old OSs.
    Now I remember there was a redist for legacy OSes (I've never seen) but 100% sure it's not installed with IE4 (or IE6)



    It comes preinstalled on XP SP3 so is fairly stable dependency on XP and latest IMO.

    cheers,
    </wqw>

  16. #16

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    One last stunt in this vein: a transparent/translucent PNG Form with no GDI+ or 3rd party library required.

    Here I used two forms, a small "main" parent form and a child form you can drag all over the screen:

    Name:  sshot.png
Views: 362
Size:  9.2 KB

    No idea what this might be useful for, but as long as we're doing "stupid pet tricks" here it is.
    Attached Files Attached Files

  17. #17
    Fanatic Member
    Join Date
    May 2014
    Location
    Kallithea Attikis, Greece
    Posts
    1,012

    Re: Paint PNGs via DrawIconEx()

    Rotation? Using GDI+ we can rotate and resize a png at draw time preserving transparency

  18. #18

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Scaling is easy enough. From the previous demo for example:

    Code:
        With BITMAP
            sizeNew.cx = .bmWidth \ 2
            sizeNew.cy = .bmHeight \ 2
        End With
    Rotation requires more effort, but it can be done.

    I never claimed this was a general replacement for GDI+, just a way to make simple use of PNG images in VB6.

  19. #19

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Experiment and you can find lots of ways to use PNG images instead of jaggier alternatives or hand-tooled antialiasing.

    Code:
    Option Explicit
    
    Private Sub Form_Load()
        Dim Parent As Integer
        Dim ParentNode As ComctlLib.Node
        Dim Child As Integer
    
        With ImageList1.ListImages
            .Add , , GetIcon.FromPngFile("button.png")
            .Add , , GetIcon.FromPngFile("brush.png")
        End With
        With TreeView1
            Set .ImageList = ImageList1
            With .Nodes
                For Parent = 1 To 4
                    Set ParentNode = .Add(, , , MonthName(Parent), 1)
                    For Child = 1 To 4
                        .Add ParentNode, tvwChild, , WeekdayName(Child), 2
                    Next
                    ParentNode.Expanded = True
                Next
                .Item(1).EnsureVisible 'Scroll to top.
            End With
        End With
    End Sub
    
    Private Sub Form_Resize()
        If WindowState <> vbMinimized Then
            TreeView1.Move 0, 0, ScaleWidth, ScaleHeight
        End If
    End Sub
    Name:  sshot.png
Views: 307
Size:  6.0 KB

    These images are imperfect, being scaled down from larger originals. If you craft your own PNGs at the actual desired size appearance can improve a little more. I don't have a good tool for creating alpha anti-aliased images myself.

  20. #20
    Addicted Member
    Join Date
    Jun 2016
    Location
    Espaņa
    Posts
    180

    Re: Paint PNGs via DrawIconEx()

    very good work.
    You could make a popup menu like these.
    Name:  can-i-change-the-font-size-or-color-of-the-qap-popup-menu-labels-3541.jpg
Views: 282
Size:  30.4 KB
    or make a popup menu replacement with better images and more features.

    Greetings

  21. #21

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Ouch.

    If you want to use any of the code above please note that in several cases there are bugs. The glaring one is where "UBound(Bytes) - 1" was used when it should be "+ 1" instead.

    Sorry about that. I guess the code worked by luck not by design.

  22. #22

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Here's a class wrapping most of the API calls used above.

    Name:  sshot.png
Views: 227
Size:  23.7 KB
    Attached Files Attached Files

  23. #23
    Hyperactive Member
    Join Date
    Aug 2016
    Posts
    485

    Re: Paint PNGs via DrawIconEx()

    Quote Originally Posted by dilettante View Post
    One last stunt in this vein: a transparent/translucent PNG Form with no GDI+ or 3rd party library required.

    Here I used two forms, a small "main" parent form and a child form you can drag all over the screen:

    Name:  sshot.png
Views: 362
Size:  9.2 KB

    No idea what this might be useful for, but as long as we're doing "stupid pet tricks" here it is.
    hi ,sir
    i want used setparent to set png child form as a subform of other programs, but the picture cannot be displayed!

    another how can I draw something strings on this png form?

  24. #24

    Thread Starter
    PowerPoster
    Join Date
    Feb 2006
    Posts
    21,764

    Re: Paint PNGs via DrawIconEx()

    Use TextOut(), DrawText(), etc. to draw text onto the memory DC. I'm not sure that layered windows work cross-process though.

    You need a new thread for these questions. They are distant from the simple topic of rendering PNG images via GDI calls.

  25. #25
    Hyperactive Member
    Join Date
    Aug 2016
    Posts
    485

    Re: Paint PNGs via DrawIconEx()

    thank you!

  26. #26
    Hyperactive Member
    Join Date
    Aug 2016
    Posts
    485

    Re: Paint PNGs via DrawIconEx()

    Quote Originally Posted by dilettante View Post
    Use TextOut(), DrawText(), etc. to draw text onto the memory DC. I'm not sure that layered windows work cross-process though.

    You need a new thread for these questions. They are distant from the simple topic of rendering PNG images via GDI calls.
    hIcon = CreateIconFromResourceEx(Bytes(0), _
    UBound(Bytes) - 1, _
    WIN32_TRUE, _
    &H30000, _
    0, _
    0, _
    LR_DEFAULTCOLOR)

    m_uData.hIcon = hIcon
    Shell_NotifyIcon NIM_MODIFY, m_uData


    can not set this hicon to systray icon.

  27. #27
    Hyperactive Member
    Join Date
    Aug 2016
    Posts
    485

    Re: Paint PNGs via DrawIconEx()

    Quote Originally Posted by xxdoc123 View Post
    hIcon = CreateIconFromResourceEx(Bytes(0), _
    UBound(Bytes) - 1, _
    WIN32_TRUE, _
    &H30000, _
    0, _
    0, _
    LR_DEFAULTCOLOR)

    m_uData.hIcon = hIcon
    Shell_NotifyIcon NIM_MODIFY, m_uData


    can not set this hicon to systray icon.
    add to imagelist

    ImageList1.ListImages.Item(1).ExtractIcon(). handle
    now work for systray icon

  28. #28
    Addicted Member
    Join Date
    Jun 2016
    Location
    Espaņa
    Posts
    180

    Re: Paint PNGs via DrawIconEx()

    some other way, without an ImageList
    Greetings

  29. #29
    Hyperactive Member
    Join Date
    Aug 2016
    Posts
    485

    Re: Paint PNGs via DrawIconEx()

    Quote Originally Posted by dilettante View Post
    Use TextOut(), DrawText(), etc. to draw text onto the memory DC. I'm not sure that layered windows work cross-process though.

    You need a new thread for these questions. They are distant from the simple topic of rendering PNG images via GDI calls.
    I found this thread

    now work ok


    Name:  ICON.jpg
Views: 66
Size:  13.5 KB

    yokesee: some other way, without an ImageList
    Greetings
    Can you tell me the method. I like to try

  30. #30
    Addicted Member
    Join Date
    Jun 2016
    Location
    Espaņa
    Posts
    180

    Re: Paint PNGs via DrawIconEx()

    sorry mistranslated.
    I wonder, another way without using an imagelist control?
    Greetings

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  



Click Here to Expand Forum to Full Width