بدست آوردن hdc صفحات با داشتن هندل آن ها

[syntiberium]

با سلام . می خواستم بدونم چجوری می شه hdc صفحات را با داشتن هندل آن ها بدست بیاوریم . برای کار هایی مثل پیکسل گذاشتن و این جور چیز ها رو صفحات مختلف نیاز دارم :لبخند: . با تشکر .

[m_vb1386]

اگه اشتباه نكرده باشم بايد اين باشه

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



'This Project needs
'- two timers, interval=100
'- a button
'in general section
Private Type POINTAPI
x As Long
y As Long
End Type
Private Declare Function GetActiveWindow Lib "user32" () As Long
Private Declare Function GetWindowDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function Ellipse Lib "gdi32" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 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 GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Sub Form_Load()
Timer1.Interval = 100
Timer1.Enabled = True
Timer2.Interval = 100
Timer2.Enabled = True
Command1.Caption = "Draw Text"
End Sub
'This will draw an Ellipse on the active window
Sub Timer1_Timer()
Dim Position As POINTAPI
'Get the cursor position
GetCursorPos Position
'Draw the Ellipse on the Screen's DC
Ellipse GetWindowDC(0), Position.x - 5, Position.y - 5, Position.x + 5, Position.y + 5
End Sub
Sub Command1_Click()
'KPD-Team 1998
'URL: http://www.allapi.net/
'E-Mail: KPDTeam@Allapi.net
Dim intCount As Integer, strString As String
strString = "Cool, text on screen !"
For intCount = 0 To 30
'Draw the text on the screen
TextOut GetWindowDC(0), intCount * 20, intCount * 20, strString, Len(strString)
Next intCount
End Sub
Private Sub Timer2_Timer()
'Draw the text to the active window
TextOut GetWindowDC(GetActiveWindow), 50, 50, "This is a form", 14
End Sub

هم يك نمونه جالبه ببينيد