設定StatusBar的文字成不同的顏色

設定StatusBar上的文字，該文字以StatusBar所在Form的字型設定為準，并以form
的ForeColor為字的顏色，文字過長時，自動會截除
這個程式的實質意義不太大，因為當文字被蓋掉後需自行重新再呼叫這個Sub才能再
將文字顯示出來，除非我們再使用Subclassing的方式，於statusBar接收到WM_PAINT
時，去呼叫這個SubRoutine，這程式著重於Font的了解

''below is within Form
Private Sub Command1_Click()
Call ShowPanelText(StatusBar1, 1, "這是一個有趣的程式hahahaha")
End Sub

''第一個叁數傳入StatusBar
''第二個叁數表示文字要在第幾個panel上 顯示，由1算起
''第三個叁數是待顯示的字串
Private Sub ShowPanelText(StatusBar1 As StatusBar, Pno As Long, ByVal PanelText
As String)
Dim bkcolor As Long
Dim Color As Long
Dim res As Long
Dim aRect As RECT, rect5 As RECT
Dim hfont As Long
Dim hdc2 As Long
Dim TextHeight As Long
Dim tx As TEXTMETRIC
Dim oScaleT As Long, oScaleL As Long, oScaleH As Long, oScaleW As Long
Dim oScaleM As Long

oScaleM = Me.ScaleMode
oScaleT = Me.ScaleTop
oScaleL = Me.ScaleLeft
oScaleH = Me.ScaleHeight
oScaleW = Me.ScaleWidth
Me.ScaleMode = 3

hdc2 = GetDC(StatusBar1.hwnd)
Call GetTextMetrics(Me.hdc, tx) ''取得form 字型資訊
hfont = CreateFont(tx.tmHeight, tx.tmAveCharWidth, 0, 0, _
tx.tmWeight, 0, 0, 0, tx.tmCharSet, 0, 0, 0, _
tx.tmPitchAndFamily, Me.Font.Name) ''依form的字型產生另一個font
''因為不知如何取得font的handle只好，使用CreateFont的方式來取得 hfont
Call SelectObject(hdc2, hfont) ''設字型
res = SetTextColor(hdc2, Me.ForeColor) ''設字的顏色
bkcolor = GetSysColor(COLOR_BTNFACE)
SetBkColor hdc2, bkcolor ''設字的背景色
SetTextAlign hdc2, TA_TOP
TextHeight = Me.TextHeight(PanelText)
aRect.Top = (StatusBar1.Height - TextHeight) \ 2
If StatusBar1.Style = 0 Then
aRect.Left = StatusBar1.Panels(Pno).Left + 2
aRect.Right = aRect.Left + StatusBar1.Panels(Pno).Width - 6
Else
aRect.Left = StatusBar1.Left + 2
aRect.Right = StatusBar1.Width - 6
End If
aRect.Bottom = StatusBar1.Height
InvalidateRect StatusBar1.hwnd, aRect, 1 ''宣告工作區無效，用來重畫statusBar
UpdateWindow StatusBar1.hwnd
DrawText hdc2, PanelText, LenB(StrConv(PanelText, vbFromUnicode)), aRect, 0
ReleaseDC StatusBar1.hwnd, hdc2
DeleteObject (hfont)
Me.ScaleMode = oScaleM
Me.ScaleHeight = oScaleH
Me.ScaleTop = oScaleT
Me.ScaleLeft = oScaleL
Me.ScaleWidth = oScaleW
End Sub

''below is within .bas module
Option Explicit
Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Type TEXTMETRIC
tmHeight As Long
tmAscent As Long
tmDescent As Long
tmInternalLeading As Long
tmExternalLeading As Long
tmAveCharWidth As Long
tmMaxCharWidth As Long
tmWeight As Long
tmOverhang As Long
tmDigitizedAspectX As Long
tmDigitizedAspectY As Long
tmFirstChar As Byte
tmLastChar As Byte
tmDefaultChar As Byte
tmBreakChar As Byte
tmItalic As Byte
tmUnderlined As Byte
tmStruckOut As Byte
tmPitchAndFamily As Byte
tmCharSet As Byte
End Type
Declare Function CreateFont Lib "gdi32" Alias "CreateFontA" _
(ByVal H As Long, ByVal W As Long, ByVal E As Long, ByVal O As Long, _
ByVal W As Long, ByVal I As Long, ByVal u As Long, ByVal S As Long, _
ByVal C As Long, ByVal OP As Long, ByVal CP As Long, _
ByVal Q As Long, ByVal PAF As Long, ByVal F As String) As Long
Declare Function GetTextMetrics Lib "gdi32" Alias "GetTextMetricsA" _
(ByVal hdc As Long, lpMetrics As TEXTMETRIC) As Long
Declare Function GetBkColor Lib "gdi32" (ByVal hdc As Long) As Long
Declare Function SetTextColor Lib "gdi32" (ByVal hdc As Long, _
ByVal crColor As Long) As Long
Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, _
ByVal hdc As Long) As Long
Declare Function SetBkColor Lib "gdi32" (ByVal hdc As Long, _
ByVal crColor As Long) As Long
Declare Function SetTextAlign Lib "gdi32" (ByVal hdc As Long, _
ByVal wFlags As Long) As Long
Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, _
ByVal hObject As Long) As Long
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
Declare Function InvalidateRect Lib "user32" (ByVal hwnd As Long, _
lpRect As RECT, ByVal bErase As Long) As Long

Declare Function UpdateWindow Lib "user32" (ByVal hwnd As Long) As Long
Declare Function GetSysColor Lib "user32" (ByVal nIndex As Long) As Long
Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long

Public Const COLOR_BTNFACE = 15
Public Const TA_TOP = 0