在VB中可以通过程序来改变程序的背景色及字体,但不可以改变其文字的颜色,请问有没有办法可以改变其字体的颜色?
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' 此模块可以设置按钮的前景色,调用的时后用SetButton ,例如:
' SetButton Command1.hWnd, vbBlue 则是将command1按钮前景色设为vbblue
' 如果设了前景色,则程序结束时需调用RemoveButton 如:RemoveButton Command1.hWnd
' 如果按钮中设置了图形,则调用的时后应加上参数DT_BOTTOM,如:
' SetButton Command1.hWnd, vbBlue, DT_BOTTOM
' 注意:调用前应确定按钮的style属性被设为1
'
' modExtButton.bas
' From Visual Basic Thunder
'
' This module provides an easy way to change the text color
' of a VB CommandButton control. To use the code with a
' CommandButton, you should:
'
' - Set the button's Style property to "Graphical" at
' design time.
'
' - Optionally set its BackColor and Picture properties.
'
' - Call SetButton in the Form_Load event:
' SetButton Command1.hWnd, vbBlue
' (You can do this multiple times during your program's
' execution, even without calling RemoveButton.)
'
' - Call RemoveButton in the Form_Unload event:
' RemoveButton Command1.hWnd
'==================================================================Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End TypePrivate Declare Function GetParent Lib "user32" _
(ByVal hWnd As Long) As LongPrivate Declare Function GetWindowLong Lib "user32" Alias _
"GetWindowLongA" (ByVal hWnd As Long, _
ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias _
"SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, _
ByVal dwNewLong As Long) As Long
Private Const GWL_WNDPROC = (-4)Private Declare Function GetProp Lib "user32" Alias "GetPropA" _
(ByVal hWnd As Long, ByVal lpString As String) As Long
Private Declare Function SetProp Lib "user32" Alias "SetPropA" _
(ByVal hWnd As Long, ByVal lpString As String, _
ByVal hData As Long) As Long
Private Declare Function RemoveProp Lib "user32" Alias _
"RemovePropA" (ByVal hWnd As Long, _
ByVal lpString As String) As LongPrivate Declare Function CallWindowProc Lib "user32" Alias _
"CallWindowProcA" (ByVal lpPrevWndFunc As Long, _
ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As LongPrivate Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" _
(Destination As Any, Source As Any, ByVal Length As Long)'Owner draw constants
Private Const ODT_BUTTON = 4
Private Const ODS_SELECTED = &H1
'Window messages we're using
Private Const WM_DESTROY = &H2
Private Const WM_DRAWITEM = &H2BPrivate Type DRAWITEMSTRUCT
CtlType As Long
CtlID As Long
itemID As Long
itemAction As Long
itemState As Long
hwndItem As Long
hDC As Long
rcItem As RECT
itemData As Long
End TypePrivate Declare Function GetWindowText Lib "user32" Alias _
"GetWindowTextA" (ByVal hWnd As Long, ByVal lpString As String, _
ByVal cch As Long) As Long
'Various GDI painting-related functions
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 SetTextColor Lib "gdi32" (ByVal hDC As Long, _
ByVal crColor As Long) As Long
Private Declare Function SetBkMode Lib "gdi32" (ByVal hDC As Long, _
ByVal nBkMode As Long) As Long
Private Const TRANSPARENT = 1Private Const DT_CENTER = &H1
Public Enum TextVAligns
DT_VCENTER = &H4
DT_BOTTOM = &H8
End Enum
Private Const DT_SINGLELINE = &H20
Private Sub DrawButton(ByVal hWnd As Long, ByVal hDC As Long, _
rct As RECT, ByVal nState As Long) Dim s As String
Dim va As TextVAligns va = GetProp(hWnd, "VBTVAlign") 'Prepare DC for drawing
SetBkMode hDC, TRANSPARENT
SetTextColor hDC, GetProp(hWnd, "VBTForeColor") 'Prepare a text buffer
s = String$(255, 0)
'What should we print on the button?
GetWindowText hWnd, s, 255
'Trim off nulls
s = Left$(s, InStr(s, Chr$(0)) - 1) If va = DT_BOTTOM Then
'Adjust specially for VB's CommandButton control
rct.Bottom = rct.Bottom - 4
End If If (nState And ODS_SELECTED) = ODS_SELECTED Then
'Button is in down state - offset
'the text
rct.Left = rct.Left + 1
rct.Right = rct.Right + 1
rct.Bottom = rct.Bottom + 1
rct.Top = rct.Top + 1
End If DrawText hDC, s, -1, rct, DT_CENTER Or DT_SINGLELINE _
Or vaEnd SubPublic Function ExtButtonProc(ByVal hWnd As Long, _
ByVal wMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As LongDim lOldProc As Long
Dim di As DRAWITEMSTRUCTlOldProc = GetProp(hWnd, "ExtBtnProc")ExtButtonProc = CallWindowProc(lOldProc, hWnd, wMsg, wParam, lParam)If wMsg = WM_DRAWITEM Then
CopyMemory di, ByVal lParam, Len(di)
If di.CtlType = ODT_BUTTON Then
If GetProp(di.hwndItem, "VBTCustom") = 1 Then
DrawButton di.hwndItem, di.hDC, di.rcItem, _
di.itemState End If End IfElseIf wMsg = WM_DESTROY Then
ExtButtonUnSubclass hWndEnd IfEnd FunctionPublic Sub ExtButtonSubclass(hWndForm As Long)Dim l As Longl = GetProp(hWndForm, "ExtBtnProc")
If l <> 0 Then
'Already subclassed
Exit Sub
End IfSetProp hWndForm, "ExtBtnProc", _
GetWindowLong(hWndForm, GWL_WNDPROC)
SetWindowLong hWndForm, GWL_WNDPROC, AddressOf ExtButtonProcEnd SubPublic Sub ExtButtonUnSubclass(hWndForm As Long)Dim l As Longl = GetProp(hWndForm, "ExtBtnProc")
If l = 0 Then
'Isn't subclassed
Exit Sub
End IfSetWindowLong hWndForm, GWL_WNDPROC, l
RemoveProp hWndForm, "ExtBtnProc"End SubPublic Sub SetButton(ByVal hWnd As Long, _
ByVal lForeColor As Long, _
Optional ByVal VAlign As TextVAligns = DT_VCENTER)Dim hWndParent As LonghWndParent = GetParent(hWnd)
If GetProp(hWndParent, "ExtBtnProc") = 0 Then
ExtButtonSubclass hWndParent
End IfSetProp hWnd, "VBTCustom", 1
SetProp hWnd, "VBTForeColor", lForeColor
SetProp hWnd, "VBTVAlign", VAlignEnd SubPublic Sub RemoveButton(ByVal hWnd As Long)RemoveProp hWnd, "VBTCustom"
RemoveProp hWnd, "VBTForeColor"
RemoveProp hWnd, "VBTVAlign"End Sub
里面的按钮就可以,很简单`
现在外部控件多得很的
换别的可以设置前景色的都可的,
不一定要button,
Try to use ImageBox.You will find it easy to work.
我也搞了半天,想想也只有调用api函数了