أكواد للصندوق النصى text box

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السماح بكتابة حروف إنجليزية فقط في مربع النص
Private Sub Text1_KeyPress(KeyAscii As Integer)
If (KeyAscii >= Asc("a") And KeyAscii <= Asc("z")) Or (KeyAscii >= Asc("A") And KeyAscii <= Asc("Z")) Then
Else
KeyAscii = 0
End If
End Sub
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السماح بكتابة أرقام فقط داخل مربع النص
Private Sub Text1_KeyPress(KeyAscii As Integer)
If KeyAscii < Asc("0") Or KeyAscii > Asc("9") Then
KeyAscii = 0
End If
End Sub
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السماح بإدخال تاريخ فقط في مربع النص
Dim i As Integer
Dim t1 As String
Dim t2 As String
Public Sub AutoDate(TextBoxName As TextBox, ByVal keyasci As Integer)
If Val(keyasci) = 8 Then
If TextBoxName.Text = Empty Then
i = 0
Else
i = i - 1
End If
Exit Sub
End If
i = i + 1
If i = 3 Then
t1 = Mid(TextBoxName.Text, 1, 2)
t2 = Mid(TextBoxName.Text, 3, 1)
TextBoxName.Text = Trim$(t1) & "/" & t2
TextBoxName.SelStart = 4
t2 = Empty
ElseIf i = 6 Then
t1 = Mid(TextBoxName.Text, 1, 5)
t2 = Mid(TextBoxName.Text, 6, 1)
TextBoxName.Text = Trim$(t1) & "/" & t2
TextBoxName.SelStart = 7
End If
If i = 11 Then Exit Sub
End Sub
Public Function DateValidation(TextBoxName As TextBox) As Boolean
If IsDate(Trim$(TextBoxName.Text)) = False Then
MsgBox "Enter valid date in dd/mm/yyyy format.", vbInformation, "System Info.."
TextBoxName.SetFocus
DateValidation = False
ElseIf Not Len(Trim$(TextBoxName.Text)) = 10 Then
MsgBox "Enter valid date in dd/mm/yyyy format.", vbInformation, "System Info.."
TextBoxName.SetFocus
DateValidation = False
Else
DateValidation = True
End If
End Function
Private Sub Text1_KeyPress(KeyAscii As Integer)
Call AutoDate(Text1, 0)
End Sub
Private Sub Text1_LostFocus()
Call DateValidation(Text1)
End Sub
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التقاط صورة للشاشة

Const RC_PALETTE As Long = &H100
Const SIZEPALETTE As Long = 104
Const RASTERCAPS As Long = 38
Private Type PALETTEENTRY
peRed As Byte
peGreen As Byte
peBlue As Byte
peFlags As Byte
End Type
Private Type LOGPALETTE
palVersion As Integer
palNumEntries As Integer
palPalEntry(255) As PALETTEENTRY ' Enough for 256 colors
End Type
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Private Type PicBmp
Size As Long
Type As Long
hBmp As Long
hPal As Long
Reserved As Long
End Type
Private Declare Function OleCreatePictureIndirect Lib "olepro32.dll" (PicDesc As PicBmp, RefIID As GUID, ByVal fPictureOwnsHandle As Long, IPic As IPicture) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal iCapabilitiy As Long) As Long
Private Declare Function GetSystemPaletteEntries Lib "gdi32" (ByVal hdc As Long, ByVal wStartIndex As Long, ByVal wNumEntries As Long, lpPaletteEntries As PALETTEENTRY) As Long
Private Declare Function CreatePalette Lib "gdi32" (lpLogPalette As LOGPALETTE) As Long
Private Declare Function SelectPalette Lib "gdi32" (ByVal hdc As Long, ByVal hPalette As Long, ByVal bForceBackground As Long) As Long
Private Declare Function RealizePalette Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC 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 dwRop As Long) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Function CreateBitmapPicture(ByVal hBmp As Long, ByVal hPal As Long) As Picture
Dim R As Long, Pic As PicBmp, IPic As IPicture, IID_IDispatch As GUID

'Fill GUID info
With IID_IDispatch
.Data1 = &H20400
.Data4(0) = &HC0
.Data4(7) = &H46
End With

'Fill picture info
With Pic
.Size = Len(Pic) ' Length of structure
.Type = vbPicTypeBitmap ' Type of Picture (bitmap)
.hBmp = hBmp ' Handle to bitmap
.hPal = hPal ' Handle to palette (may be null)
End With

'Create the picture
R = OleCreatePictureIndirect(Pic, IID_IDispatch, 1, IPic)

'Return the new picture
Set CreateBitmapPicture = IPic
End Function
Function hDCToPicture(ByVal hDCSrc As Long, ByVal ****Src As Long, ByVal TopSrc As Long, ByVal WidthSrc As Long, ByVal HeightSrc As Long) As Picture
Dim hDCMemory As Long, hBmp As Long, hBmpPrev As Long, R As Long
Dim hPal As Long, hPalPrev As Long, RasterCapsScrn As Long, HasPaletteScrn As Long
Dim PaletteSizeScrn As Long, LogPal As LOGPALETTE

'Create a compatible device context
hDCMemory = CreateCompatibleDC(hDCSrc)
'Create a compatible bitmap
hBmp = CreateCompatibleBitmap(hDCSrc, WidthSrc, HeightSrc)
'Select the compatible bitmap into our compatible device context
hBmpPrev = SelectObject(hDCMemory, hBmp)

'Raster capabilities?
RasterCapsScrn = GetDeviceCaps(hDCSrc, RASTERCAPS) ' Raster
'Does our picture use a palette?
HasPaletteScrn = RasterCapsScrn And RC_PALETTE ' Palette
'What's the size of that palette?
PaletteSizeScrn = GetDeviceCaps(hDCSrc, SIZEPALETTE) ' Size of

If HasPaletteScrn And (PaletteSizeScrn = 256) Then
'Set the palette version
LogPal.palVersion = &H300
'Number of palette entries
LogPal.palNumEntries = 256
'Retrieve the system palette entries
R = GetSystemPaletteEntries(hDCSrc, 0, 256, LogPal.palPalEntry(0))
'Create the palette
hPal = CreatePalette(LogPal)
'Select the palette
hPalPrev = SelectPalette(hDCMemory, hPal, 0)
'Realize the palette
R = RealizePalette(hDCMemory)
End If

'Copy the source image to our compatible device context
R = BitBlt(hDCMemory, 0, 0, WidthSrc, HeightSrc, hDCSrc, ****Src, TopSrc, vbSrcCopy)

'Restore the old bitmap
hBmp = SelectObject(hDCMemory, hBmpPrev)

If HasPaletteScrn And (PaletteSizeScrn = 256) Then
'Select the palette
hPal = SelectPalette(hDCMemory, hPalPrev, 0)
End If

'Delete our memory DC
R = DeleteDC(hDCMemory)

Set hDCToPicture = CreateBitmapPicture(hBmp, hPal)
End Function
Private Sub Form_Load()
'Create a picture object from the screen
Set Me.Picture = hDCToPicture(GetDC(0), 0, 0, Screen.Width / Screen.TwipsPerPixelX, Screen.Height / Screen.TwipsPerPixelY)
End Sub

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