模仿WIN自带的放大器,用了几个很简单的API,适合API初学者!

功能:

1.屏幕顶层窗口

2.抓坐标

3.场景

'--------新建form粘贴以下所有代码,加一个Timer1------------

Option Explicit

Private Type POINTAPI

x As Long

y As Long

End Type

Const Srccopy = &HCC0020

Const Swp_nomove = &H2

Const Swp_nosize = &H1

Const Flags = Swp_nomove Or Swp_nosize

Const hwnd_topmost = -1

Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long

Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long

Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long

Private Declare Function StretchBlt Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal nSrcWidth As Long, ByVal nSrcHeight As Long, ByVal dwRop As Long) As Long

Dim pos As POINTAPI

Private Sub Form_Load()

Me.Left = 0

Me.Top = 0

Me.Height = 3330

Me.Width = 3090

SetWindowPos hwnd, hwnd_topmost, 0, 0, 0, 0, Flags

End Sub

Private Sub start()

Dim sx As Integer

Dim sy As Integer

GetCursorPos pos

sx = IIf(pos.x < 50 Or pos.x > 590, IIf(pos.x < 50, 0, 540), pos.x - 50)

sy = IIf(pos.y < 50 Or pos.y > 430, IIf(pos.y < 50, 0, 380), pos.y - 50)

Caption = "坐标" & sx & "," & sy & " Wlclass"

StretchBlt hdc, 0, 0, 200, 200, GetDC(0), sx, sy, 100, 100, Srccopy

End Sub

Private Sub Timer1_Timer()

start

End Sub