DrawText API

Harro. I am trying to draw some text on a picture box using the DrawText API. For Some Reason it does not work, It doesnt draw anything at all. Maybe someone can fill me in.

I am also using the SetRect API to draw the rect to draw the text in.

VB Code:

'In Module
Public Declare Function DrawText Lib "user32" Alias "DrawTextA" _
                       (ByVal hdc As Long, _
                        ByVal lpStr As String, ByVal nCount As Long, _
                        lpRect As RECT, _
                        ByVal wFormat As Long) As Long
 
Public Declare Function SetRect Lib "user32" _
                       (lpRect As RECT, _
                        ByVal X1 As Long, ByVal Y1 As Long, _
                        ByVal X2 As Long, ByVal Y2 As Long) As Long
 
 
Public Type RECT
            Left As Long
            Top As Long
            Right As Long
            Bottom As Long
End Type
 
Public Const DT_CENTER = &H1
Public Const DT_LEFT = &H0
Public Const DT_RIGHT = &H2
Public Const DT_VCENTER = &H4
Public Const DT_WORDBREAK = &H10
Public Const DT_SINGLELINE = &H20
 
'In General Section of Form
Dim ItemRct As RECT
 
'In a command Button
 
SetRect ItemRct, 0, Picture1.TextHeight("Aa"), ItemRct.Right, Picture1.TextHeight("Aa") + Picture1.TextHeight("Aa")
 
DrawText Picture1.hdc, Text1.Text, Len(Text1), ItemRct, DT_SINGLELINE Or DT_VCENTER

THANKS!
:D :D :D :) :cool: :p

This works. I just tried it. Hopefully you can modify this example to fit your needs.

VB Code:

Const DC_ACTIVE = &H1
Const DC_ICON = &H4
Const DC_TEXT = &H8
Const BDR_SUNKENOUTER = &H2
Const BDR_RAISEDINNER = &H4
Const EDGE_ETCHED = (BDR_SUNKENOUTER Or BDR_RAISEDINNER)
Const BF_BOTTOM = &H8
Const BF_LEFT = &H1
Const BF_RIGHT = &H4
Const BF_TOP = &H2
Const BF_RECT = (BF_LEFT Or BF_TOP Or BF_RIGHT Or BF_BOTTOM)
Const DFC_BUTTON = 4
Const DFC_POPUPMENU = 5            'Only Win98/2000 !!
Const DFCS_BUTTON3STATE = &H10
Const DT_CENTER = &H1
Const DC_GRADIENT = &H20          'Only Win98/2000 !!
Private Type RECT
    Left As Long
    Top As Long
    Right As Long
    Bottom As Long
End Type
Private Declare Function DrawCaption Lib "user32" (ByVal hWnd As Long, ByVal hdc As Long, pcRect As RECT, ByVal un As Long) As Long
Private Declare Function DrawEdge Lib "user32" (ByVal hdc As Long, qrc As RECT, ByVal edge As Long, ByVal grfFlags As Long) As Long
Private Declare Function DrawFocusRect Lib "user32" (ByVal hdc As Long, lpRect As RECT) As Long
Private Declare Function DrawFrameControl Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal un1 As Long, ByVal un2 As Long) As Long
Private Declare Function DrawText Lib "user32" Alias "DrawTextA" (ByVal hdc As Long, ByVal lpStr As String, ByVal nCount As Long, lpRect As RECT, ByVal wFormat As Long) As Long
Private Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function OffsetRect Lib "user32" (lpRect As RECT, ByVal x As Long, ByVal y As Long) As Long
Private Sub Form_Paint()
    'KPD-Team 1999
    'URL: [url]http://www.allapi.net/[/url]
    'E-Mail: [email][email protected][/email]
    Dim R As RECT
    'Clear the form
    Me.Cls
    'API uses pixels
    Me.ScaleMode = vbPixels
    'Set the rectangle's values
    SetRect R, 0, 0, Me.ScaleWidth, 20
    'Draw a caption on the form
    DrawCaption Me.hWnd, Me.hdc, R, DC_ACTIVE Or DC_ICON Or DC_TEXT Or DC_GRADIENT
    'Move the recatangle
    OffsetRect R, 0, 22
    'Draw an edge on our window
    DrawEdge Me.hdc, R, EDGE_ETCHED, BF_RECT
    OffsetRect R, 0, 22
    'Draw a focus rectangle on our window
    DrawFocusRect Me.hdc, R
    OffsetRect R, 0, 22
    'Draw a frame control on our window
    DrawFrameControl Me.hdc, R, DFC_BUTTON, DFCS_BUTTON3STATE
    OffsetRect R, 0, 22
    'draw some text on our form
    DrawText Me.hdc, "Hello World !", Len("Hello World !"), R, DT_CENTER
End Sub

Thanks. Turns out i was missing the line. Picture1.Scalemode=vbpixels

ARG! Dangit i can not figure this out. I think i had it working once but then fooled around with it and now cant fix it back.


I can draw the text on the picturebox just fine. My problem is Getting the text to add like a list. I.e. i can add this

Text1


But when i click again i want it to add another Text1 below it such as

Text1
Text1
Text1


I cant figure it out! Good lord how agrivating.

VB Code:

'This code here in a command button draws 1 item
'Maybe someone can figure out how to get it to draw multiple items i HOPE:D 
 
Picture1.ScaleMode = vbPixels
SetRect ItemRct, 0, 0, Picture1.ScaleWidth, Picture1.TextHeight("Aa")
DrawText Picture1.hdc, Text1.Text, Len(Text1), ItemRct, DT_SINGLELINE Or DT_VCENTER

Just add the API from above to a module and those 3 lines to a command button or whatever.

THANKS!

:D :D :D ;) :p :(

NM i figured it out FInally! Whoohoo!:D