Aero glass effect with vb6
Contenu du snippet
Juste un petit tutoriel pour démontrer l'utilisation des APis du Desktop Windows Manager de Vista en Visual Basic 6.
Lancez VB6, choisissez Standard EXE, ajoutez une Form et copiez le code. F5 pour apercevoir le résultat.
Lancez VB6, choisissez Standard EXE, ajoutez une Form et copiez le code. F5 pour apercevoir le résultat.
Source / Exemple :
Option Explicit
Private m_ScaleX As Long
Private m_ScaleY As Long
Private m_hdc As Long
Private m_hwnd As Long
Dim m_hTheme As Long
Dim m_hFont As Long
Dim m_lFontSize As Long
Private Type MARGINS
Left As Long
Right As Long
Top As Long
Bottom As Long
End Type
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type POINTAPI
x As Long
y As Long
End Type
Private Type BITMAPINFOHEADER
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type
Private Type RGBQUAD
rgbBlue As Byte
rgbGreen As Byte
rgbRed As Byte
rgbReserved As Byte
End Type
Private Type BITMAPINFO
bmiHeader As BITMAPINFOHEADER
bmiColors As RGBQUAD
End Type
Private Type DTTOPTS
dwSize As Long
dwFlags As Long
crText As Long
crBorder As Long
crShadow As Long
eTextShadowType As Long
ptShadowOffset As POINTAPI
iBorderSize As Long
iFontPropId As Long
iColorPropId As Long
iStateId As Long
fApplyOverlay As Long
iGlowSize As Long
End Type
Private Type LOGFONT
lfHeight As Long
lfWidth As Long
lfEscapement As Long
lfOrientation As Long
lfWeight As Long
lfItalic As Byte
lfUnderline As Byte
lfStrikeOut As Byte
lfCharSet As Byte
lfOutPrecision As Byte
lfClipPrecision As Byte
lfQuality As Byte
lfPitchAndFamily As Byte
lfFaceName(31) As Byte
End Type
Private Type NONCLIENTMETRICS
cbSize As Long
iBorderWidth As Long
iScrollWidth As Long
iScrollHeight As Long
iCaptionWidth As Long
iCaptionHeight As Long
lfCaptionFont As LOGFONT
iSMCaptionWidth As Long
iSMCaptionHeight As Long
lfSMCaptionFont As LOGFONT
iMenuWidth As Long
iMenuHeight As Long
lfMenuFont As LOGFONT
lfStatusFont As LOGFONT
lfMessageFont As LOGFONT
End Type
Const DIB_RGB_COLORS = 0
Const BI_RGB = 0
Const DTT_GLOWSIZE = 2048
Const DTT_COMPOSITED = 8192
Const SRCCOPY As Long = &HCC0020
Const DT_SINGLELINE = &H20
Const DT_CENTER = &H1
Const DT_VCENTER = &H4
Const DT_NOPREFIX = &H800
Const SPI_GETNONCLIENTMETRICS = 41
Const DEFAULT_QUALITY = 0
Const NONANTIALIASED_QUALITY = 3
Const ANTIALIASED_QUALITY = 4
Const CLEARTYPE_QUALITY = 5
Private Declare Function DwmExtendFrameIntoClientArea Lib "dwmapi.dll" (ByVal hWnd As Long, margin As MARGINS) As Long
Private Declare Function DwmIsCompositionEnabled Lib "dwmapi" (ByRef pfEnabled As Long) As Long
'
Private Declare Function GetClientRect Lib "user32" (ByVal hWnd As Long, lpRect As RECT) As Long
Private Declare Function FillRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush As Long) As Long
Private Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hWnd As Long, ByVal hdc As Long) As Long
Private Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, ByRef lpvParam As NONCLIENTMETRICS, ByVal fuWinIni As Long) As Long
'
Private Declare Function CreateSolidBrush Lib "gdi32" (ByVal crColor As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function CreateDIBSection Lib "gdi32" (ByVal hdc As Long, ByRef pBitmapInfo As BITMAPINFO, ByVal un As Long, ByVal lplpVoid As Long, ByVal handle As Long, ByVal dw 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 CreateFontIndirect Lib "gdi32" Alias "CreateFontIndirectA" (ByRef lpLogFont As LOGFONT) As Long
'
Private Declare Function OpenThemeData Lib "uxtheme" (ByVal hWnd As Long, ByVal pszClassList As String) As Long
Private Declare Function CloseThemeData Lib "uxtheme" (ByVal hTheme As Long) As Long
Private Declare Function DrawThemeTextEx Lib "uxtheme" (ByVal hTheme As Long, ByVal hdc As Long, ByVal iPartId As Long, _
ByVal iStateId As Long, ByVal pszText As String, ByVal iCharCount As Long, ByVal dwFlags As Long, pRect As RECT, pOptions As DTTOPTS) As Long
Private Sub Form_Load()
Dim enabled As Long
Dim x As Long
Dim mg As MARGINS
Dim lpFont As LOGFONT
Dim ncm As NONCLIENTMETRICS
With Screen
m_ScaleX = .TwipsPerPixelX
m_ScaleY = .TwipsPerPixelY
End With
With Me
m_hdc = .hdc
m_hwnd = .hWnd
m_hTheme = OpenThemeData(.hWnd, StrConv("Window", vbUnicode))
End With
With mg
.Left = -1
.Right = -1
.Top = -1
.Bottom = -1
End With
With ncm
.cbSize = Len(ncm)
Call SystemParametersInfo(SPI_GETNONCLIENTMETRICS, Len(ncm), ncm, 0)
lpFont = .lfMessageFont
End With
With lpFont
.lfWeight = 700
.lfHeight = .lfHeight * 1.5 ' FontSize == 18
m_lFontSize = -.lfHeight
.lfQuality = CLEARTYPE_QUALITY
End With
m_hFont = CreateFontIndirect(lpFont)
Call DwmIsCompositionEnabled(enabled)
If (enabled) Then Call DwmExtendFrameIntoClientArea(m_hwnd, mg)
End Sub
Private Sub Form_Paint()
Dim obj As Long
Dim hOld As Long
Dim lpRect As RECT
obj = CreateSolidBrush(RGB(0, 0, 0))
hOld = SelectObject(m_hdc, obj)
GetClientRect m_hwnd, lpRect
FillRect m_hdc, lpRect, obj
SelectObject m_hdc, hOld
DeleteObject obj
'
Call DrawGlassEffect("Hello VISTA", lpRect)
End Sub
Private Sub Form_Unload(Cancel As Integer)
If m_hTheme Then CloseThemeData (m_hTheme)
If m_hFont Then DeleteObject (m_hFont)
End Sub
Private Sub DrawGlassEffect(ByVal szText As String, lpRect As RECT)
Dim bm As Long
Dim hOld As Long
Dim handle As Long
Dim dib As BITMAPINFO
Dim dto As DTTOPTS
'
handle = CreateCompatibleDC(m_hdc)
'
With dib.bmiHeader
.biSize = 40 ' sizeof(BITMAPINFOHEADER)
.biWidth = 50 * m_ScaleX
.biHeight = -m_lFontSize * m_ScaleY
.biPlanes = 1
.biBitCount = 32
.biCompression = BI_RGB
End With
'
With dto
.dwSize = Len(dto)
.dwFlags = DTT_GLOWSIZE Or DTT_COMPOSITED
.iGlowSize = 10
End With
'
bm = CreateDIBSection(m_hdc, dib, DIB_RGB_COLORS, 0, 0, 0)
'
hOld = SelectObject(handle, bm)
Call SelectObject(handle, m_hFont)
'
Call DrawThemeTextEx(m_hTheme, handle, 0, 0, StrConv(szText, vbUnicode), -1, DT_SINGLELINE Or DT_CENTER Or DT_VCENTER Or DT_NOPREFIX, lpRect, dto)
Call BitBlt(m_hdc, 0, 0, 50 * m_ScaleX, m_lFontSize * m_ScaleY, handle, 0, 0, SRCCOPY)
'
Call SelectObject(handle, hOld)
DeleteObject bm
DeleteDC handle
End Sub
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