ListBox 如何改变某行的字体颜色

Option Explicit

Private Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type
Private Type DRAWITEMSTRUCT
        CtlType As Long     ‘控件类型
        CtlID As Long       ‘控件ID
        itemID As Long      ‘菜单项、列表框或组合框中某一项的索引值
        itemAction As Long  ‘控件行为
        itemState As Long   ‘控件状态
        hwndItem As Long    ‘父窗口句柄或菜单句柄
        hdc As Long         ‘控件对应的绘图设备句柄
        rcItem As RECT      ‘控件所占据的矩形区域
        itemData As Long    ‘列表框或组合框中某一项的值
End Type

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length 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 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 Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function CreateSolidBrush Lib "gdi32" (ByVal crColor As Long) As Long
Private Declare Function FillRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function SetBkColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Private Declare Function SetTextColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Private Declare Function TextOut Lib "gdi32" Alias "TextOutA" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal lpString As String, ByVal nCount As Long) As Long
Private Declare Function DrawFocusRect Lib "user32" (ByVal hdc As Long, lpRect As RECT) As Long
Private Declare Function GetSysColor Lib "user32" (ByVal nIndex As Long) As Long

Private Const COLOR_HIGHLIGHT = 13
Private Const COLOR_HIGHLIGHTTEXT = 14
Private Const COLOR_WINDOW = 5
Private Const COLOR_WINDOWTEXT = 8
Private Const LB_GETTEXT = &H189
Private Const WM_DRAWITEM = &H2B
Private Const GWL_WNDPROC = (-4)
Private Const ODS_FOCUS = &H10
Private Const ODT_LISTBOX = 2

Private lPrevWndProc As Long

Private Function SubClassedList(ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Dim tItem As DRAWITEMSTRUCT
    Dim sBuff As String * 255
    Dim sItem As String
    Dim lBack As Long
    If Msg = WM_DRAWITEM Then   ‘绘制菜单消息
    Call CopyMemory(tItem, ByVal lParam, Len(tItem))
        If tItem.CtlType = ODT_LISTBOX Then  ‘只处理控件类型为listbox的控件
        Call SendMessage(tItem.hwndItem, LB_GETTEXT, tItem.itemID, ByVal sBuff) ‘获得具体值
             sItem = Left(sBuff, InStr(sBuff, Chr(0)) - 1)
            If (tItem.itemState And ODS_FOCUS) Then  ‘判断某项是否具有焦点
               lBack = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT))
                Call FillRect(tItem.hdc, tItem.rcItem, lBack)
                Call SetBkColor(tItem.hdc, GetSysColor(COLOR_HIGHLIGHT))
                Call SetTextColor(tItem.hdc, GetSysColor(COLOR_HIGHLIGHTTEXT))
                TextOut tItem.hdc, tItem.rcItem.Left, tItem.rcItem.Top, ByVal sItem, Len(sItem)
                DrawFocusRect tItem.hdc, tItem.rcItem
            Else  ‘如果没有焦点，则
                lBack = CreateSolidBrush(GetSysColor(COLOR_WINDOW))
                Call FillRect(tItem.hdc, tItem.rcItem, lBack)
                Call SetBkColor(tItem.hdc, GetSysColor(COLOR_WINDOW))
                Call SetTextColor(tItem.hdc, tItem.itemData)
                TextOut tItem.hdc, tItem.rcItem.Left, tItem.rcItem.Top, ByVal sItem, Len(sItem)
            End If
            Call DeleteObject(lBack)
            SubClassedList = 0
            Exit Function
                     End If
             End If
    SubClassedList = CallWindowProc(lPrevWndProc, hWnd, Msg, wParam, lParam)
End Function

Public Sub SubLists(ByVal hWnd As Long)
    lPrevWndProc = SetWindowLong(hWnd, GWL_WNDPROC, AddressOf SubClassedList)
End Sub

Public Sub RemoveSubLists(ByVal hWnd As Long)
    Call SetWindowLong(hWnd, GWL_WNDPROC, lPrevWndProc)
End Sub

‘窗体中 ：

Private Sub Form_Load()
    Dim I As Integer
    For I = 0 To 15
        List1.AddItem "Color " & I
        List2.AddItem "FDSF"
    Next
    SubLists hWnd
End Sub

Private Sub Form_Unload(Cancel As Integer)
    RemoveSubLists hWnd
End Sub

‘如果你想让list1的第五行的字体颜色为红色，则
    List1.itemData(4) = RGB(255, 0, 0)
    List1.Refresh

‘listbox的style设置为checkbox

sItem = Left(sBuff, InStr(sBuff, Chr(0)) - 1)
‘改成Trim(sBuff)即可显示全部中文。
Call SetBkColor(tItem.hdc, GetSysColor(COLOR_WINDOW))
Call SetTextColor(tItem.hdc, tItem.itemData)
‘这里是改背景和字体颜色的地方。