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| Title | Interactively change a font's height, width, weight, and font name |
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| Description | This example shows how to interactively change a font's height, width, weight, and font name in Visual Basic 6. It uses the CreateFont API function to make the appropriate font. |
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| Keywords | font, text, CreateFont |
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| Categories | Graphics, API |
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When you change the font's height, width, weight, font name, or text, the appropriate control's event handler calls subroutine ShowFont. That routine calls the CustomFont function to make a new font. It uses SelectObject to install the font on the form, draws some text, uninstals the font, and uses DeleteObject to free the font's resources.
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Private Sub ShowFont()
Dim wid As Long
Dim hgt As Long
Dim wgt As Long
Dim newfont As Long
Dim oldfont As Long
On Error Resume Next
' Select the new font.
wid = CLng(txtWidth.Text)
hgt = CLng(txtHeight.Text)
wgt = cboWeight.ItemData(cboWeight.ListIndex)
newfont = CustomFont(hgt, wid, 0, 0, _
wgt, False, False, False, cboFont.Text)
oldfont = SelectObject(hdc, newfont)
' Display the text.
Line (0, 0)-(1000, 1000), BackColor, BF
CurrentX = 10
CurrentY = cboFont.Height + cboFont.Top + 10
Print txtText.Text
Picture = Image
' Restore the original font.
newfont = SelectObject(hdc, oldfont)
' Free font resources (important!)
DeleteObject newfont
End Sub
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Function CustomFont uses the CreateFont API function to make a new font and return the font's handle.
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' Make a customized font and return its handle.
Private Function CustomFont(ByVal hgt As Long, ByVal wid As _
Long, ByVal escapement As Long, ByVal orientation As _
Long, ByVal wgt As Long, ByVal is_italic As Long, ByVal _
is_underscored As Long, ByVal is_striken_out As Long, _
ByVal face As String) As Long
Const CLIP_LH_ANGLES = 16 ' Needed for tilted fonts.
CustomFont = CreateFont( _
hgt, wid, escapement, orientation, wgt, _
is_italic, is_underscored, is_striken_out, _
0, 0, CLIP_LH_ANGLES, 0, 0, face)
End Function
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