module1.bas

用vb编写的华容道游戏

Attribute VB_Name = "Module1"
Public Declare Function GetObjectAPI Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long

Public Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long

Public Declare Function SetWindowRgn Lib "user32" (ByVal hwnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long

Public Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long

Public Declare Function CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long

Public Const RGN_OR = 2

Public Declare Function GetBitmapBits Lib "gdi32" (ByVal hBitmap As Long, ByVal dwCount As Long, lpBits As Any) As Long


Public Type BITMAP '14 bytes
bmType As Long
bmWidth As Long
bmHeight As Long
bmWidthBytes As Long
bmPlanes As Integer
bmBitsPixel As Integer
bmBits As Long
End Type

Dim bmByte() As Byte

Public Declare Function ReleaseCapture Lib "user32" () As Long

Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

'Public Const WM_SYSCOMMAND = &H112
'Public Const SC_MOVE = &HF012
Public Const HTCAPTION = 2
Public Const WM_NCLBUTTONDOWN = &HA1


Public load_flag As Boolean
Public a(4, 3) As Integer
Public b(9, 1) As Integer
Public left_ok As Boolean
Public right_ok As Boolean
Public up_ok As Boolean
Public down_ok As Boolean
Public move_num As Integer
Public step_num As Integer
Public step1 As Integer
Public max_step As Integer
Public game_num As Integer







Public Sub SetAutoRgn(hForm As Form, Optional transColor As Byte = vbNull)
Dim X As Long, Y As Long
Dim Rgn1 As Long, Rgn2 As Long
Dim SPos As Long, EPos As Long
Dim bm As BITMAP
Dim hbm As Long
Dim Wid As Long, Hgt As Long
Dim xoff As Long, yoff As Long

'获取窗体背景图片尺寸

hbm = hForm.Picture
GetObjectAPI hbm, Len(bm), bm
Wid = bm.bmWidth
Hgt = bm.bmHeight


ReDim bmByte(1 To Wid, 1 To Hgt)
GetBitmapBits hbm, Wid * Hgt, bmByte(1, 1) '获取图像数组


'如果没有传入transColor参数，则用第一个像素作为透明色

If transColor = vbNull Then transColor = bmByte(1, 1)

Rgn1 = CreateRectRgn(0, 0, 0, 0)

For Y = 1 To Hgt '逐行扫描
X = 0
Do
X = X + 1

While (bmByte(X, Y) = transColor) And (X < Wid)
X = X + 1 '跳过是透明色的点
Wend
SPos = X
While (bmByte(X, Y) <> transColor) And (X < Wid)
X = X + 1 '跳过不是透明色的点
Wend
EPos = X - 1

'这一段是合并区域
If SPos <= EPos Then
Rgn2 = CreateRectRgn(SPos - 1, Y - 1, EPos, Y)
CombineRgn Rgn1, Rgn1, Rgn2, RGN_OR
DeleteObject Rgn2
End If
Loop Until X >= Wid
Next Y

SetWindowRgn hForm.hwnd, Rgn1, True '设定窗体形状区域
DeleteObject Rgn1

End Sub