非阻塞“吐司"像 Microsoft Access (VBA) 的通知 [英] non-blocking "toast" like notifications for Microsoft Access (VBA)
问题描述
如何显示非阻塞的toast"像 Microsoft Access 中的通知?那确实有某种动画效果，不应阻塞主机应用程序！
我的朋友问我关于非阻塞 toast 的问题，例如 ms 访问的通知.我的第一个想法是，检查谷歌你会发现很多样本.他对得到的样品并不满意.
他想要类似 (JQuery) 非阻塞通知的东西.用户需要知道但不一定需要交互的内容.
由于在 VBA 中无法进行线程处理，我想，如果您可以编写自己的 .dll 会怎样?所以我最终编写了一个 .NET DLL，它可以被(windows)VBA 代码访问并显示一个 toast 通知.(实际的 dll 创建和从 vba 访问 .NET dll 是我稍后将介绍的另一个主题)(
How to show non-blocking "toast" like notifications in Microsoft Access? That does have some sort of animation and should not block the host application!
My friend asked me about non-blocking toast like notifications for ms access. My first thought was, check google you will find plenty of samples. He wasn't happy with the samples he got.
He wanted something like (JQuery) non-blocking notifications. Something that user needs to know but not necessarily needs to interact.
Since threading is not possible in VBA, I thought, what if you could write your own .dll? so I ended up writing a .NET DLL which can be accessed by (windows) VBA code and show a toast notification. (the actual dll creation and accessing .NET dll from vba is another topic that I will cover later)(You can read more in my blog leave comments or suggestions as per your wish.)
For now, you can download the DLL that I've created from here: HERE
Edit: The above download links and the GitHub link have been updated to working links that I think belong to the author.
If you are concerned about downloading unknown DLLs: VirusTotal Scan report
Add the DLL to your application's root folder and add following codes to your application.
'Module level public variable
Public gTOASTER As Object
' to save window metrics
Public Type RECT
Left As Long ' x1
Top As Long ' y1
Right As Long ' x2
Bottom As Long ' y2
End Type
#If VBA7 Then
Public Declare PtrSafe Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As LongPtr
Public Declare PtrSafe Function KRISH_VBA_TOOLS Lib "VBA_TOOLS.dll" () As Object
Public Declare PtrSafe Function GetWindowRect Lib "user32" (ByVal hWnd As LongPtr, ByRef lpRect As RECT) As LongPtr
#Else
Public Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal strFilePath As String) As Long
Public Declare Function KRISH_VBA_TOOLS Lib "VBA_TOOLS.dll" () As Object
Public Declare Function GetWindowRect Lib "user32" (ByVal hWnd As LongPtr, ByRef lpRect As RECT) As LongPtr
#End If
Public Function FN_TOAST_DLL(iMessage As String, Optional iCLOSE_DURATION As Long = 3000, Optional iType As String = "success", Optional iANIME_DURATION As Long = 1000, Optional iFONT_COLOR As String = "#FFFFFF", Optional iX As Long = 0, Optional iY As Long = 0, Optional iANIME_DIRECTION As Integer = 1, Optional iPARENT_HWND As Long = 0)
On Error GoTo LABEL_EXIT_ROUTINE:
If gTOASTER Is Nothing Then
LoadLibrary (FN_APP_GET_BASE_PATH & "VBA_TOOLS.dll")
Set gTOASTER = KRISH_VBA_TOOLS()
GoTo LABEL_TOAST
Else
GoTo LABEL_TOAST
End If
On Error GoTo 0
Exit Function
LABEL_EXIT_ROUTINE:
msgbox iMessage & vbnewline & err.description
Exit Function
LABEL_TOAST:
'set background color. (pass any html color code)
Select Case iType
Case "error"
iType = "#F76160"
Case "success"
iType = "#26ad82"
Case Else
iType = "#26ad82"
End Select
'if parent object is provided show the toast on top of the parent. if custom x, y is provided use x,y coordinated. if none provided use access app's locaiton.
Dim mRect As RECT
If iPARENT_HWND <= 0 Then
If iX = 0 And iY = 0 Then
GetWindowRect Application.hWndAccessApp, mRect
iANIME_DIRECTION = 0 'anim direction 0 to down and 1 to up
End If
Else ' iPARENT_HWND > 0 Then 'parent_hwnd is null
GetWindowRect iPARENT_HWND, mRect
End If
'set up some offsets
iX = mRect.Left + 360
iY = mRect.Top + 1
On Error Resume Next
gTOASTER.FN_SHOW_TOAST iMessage, iCLOSE_DURATION, iType, iANIME_DURATION, iFONT_COLOR, iX, iY, iANIME_DIRECTION
End Function
Public Function FN_APP_GET_BASE_PATH()
Dim FN As String
FN = Application.CurrentProject.path
If VBA.Right(Application.CurrentProject.path, 1) <> "" Then FN = FN & ""
FN_APP_GET_BASE_PATH = FN
End Function
parameter list from the DLL if you want to customise the fn_toast_dll function:
' /// <summary>
' ///
' /// </summary>
' /// <param name="iMessage">Message to display</param>
' /// <param name="iDuration">Duration in Milliseconds to keep the toast before fading out..</param>
' /// <param name="iBG_COLOR">HTML color code for your toast background...</param>
' /// <param name="iANIME_DURATION">Millisecond value used to for fading in and out the Toast.. 1/4 is used to fade in rest to fade out..</param>
' /// <param name="iFONT_COLOR">HTML Color code for the font..</param>
' /// <param name="iX">x position on the screen. where the toast should appear</param>
' /// <param name="iY">y position on the screen where the toast should appear</param>
' /// <param name="iANIM_DIRECTION">{0,1} 0 will show/add further notifications downwards and 1 upwards.</param>
' /// <returns></returns>
to show a notification call this method:
FN_TOAST_DLL "hello this is a green test" ' By default a success message with 3 seconds will be "toasted"
FN_TOAST_DLL "hello this is an error", 15000, "error"
Usage:
You can use this for any non interacting alerts.. like login success, or action cancelled alerts or anything that user does not need to press OK to acknowledge your message.
Goal I will upload the Dll project on GitHub and ask for contribution from other VBA C# experts to make it bit more fancier and available for all VBA developers.
Here is my GitHub link: GitHub Please contribute as much as you want and make this available for everyone :) I'll be happy if you can leave the main class name as it is.
A sample:
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