【问题标题】:How to set the mouse cursor to a specified location on a label?如何将鼠标光标设置到标签上的指定位置?
【发布时间】:2021-04-25 09:01:56
【问题描述】:

所以我在 Visual Basic 6.0 中开发了这个游戏,这是一个迷宫游戏,我希望我的鼠标光标设置在带有迷宫的表单的开始标签上,并且一旦表单被激活并获得焦点!

Dim label1 As New label=Start

【问题讨论】:

  • 您能说得更具体些吗?你说的是什么形式?

标签: vb6 mouse


【解决方案1】:

我过去曾使用 Windows API 完成过类似的任务。在下面的示例中,表单包含一个名为“Label1”的标签,该标签位于表单的某个位置。当 Form 被激活时,光标会以 'Label1' 为中心:

Option Explicit

Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function SetCursorPos Lib "user32" (ByVal x As Long, ByVal y As Long) As Long

Private Type RECT
   Left As Long
   Top As Long
   Right As Long
   Bottom As Long
End Type

Private Sub Form_Activate()
    Dim wr As RECT
    Dim tb As Long
    Dim le As Long
    Dim x As Long
    Dim y As Long
    
    'calculate coordinates
    Call GetWindowRect(Me.hwnd, wr)                                    'window coordinates
    tb = (Me.Height - Me.ScaleHeight) - (Me.Width - Me.ScaleWidth) / 2 'title bar height
    le = (Me.Width - Me.ScaleWidth) * 0.5                              'left edge of client area
    
    'calculate center of label
    x = wr.Left + ScaleX(le + Label1.Left + Label1.Width * 0.5, Me.ScaleMode, vbPixels)
    y = wr.Top + ScaleY(tb + Label1.Top + Label1.Height * 0.5, Me.ScaleMode, vbPixels)
    SetCursorPos x, y
End Sub

【讨论】:

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