December 2015 ~ LEARN MS-ACCESS TIPS AND TRICKS

Do While DateCnt <= EndDate If Format(DateCnt, "ddd") <> "Sun" And _ Format(DateCnt, "ddd") <> "Sat" Then EndDays = EndDays + 1 End If DateCnt = DateAdd("d", 1, DateCnt)'increment the date by 1 Loop

Function Work_Days(BegDate As Variant, EndDate As Variant) As Integer Dim WholeWeeks As Variant Dim DateCnt As Variant Dim EndDays As Integer On Error GoTo Err_Work_Days BegDate = DateValue(BegDate) EndDate = DateValue(EndDate) 'Number of whole weeks WholeWeeks = DateDiff("w", BegDate, EndDate) 'Next date after whole weeks of 7 days each DateCnt = DateAdd("ww", WholeWeeks, BegDate) EndDays = 0 'to count number of days except Saturday & Sunday Do While DateCnt <= EndDate If Format(DateCnt, "ddd") <> "Sun" And _ Format(DateCnt, "ddd") <> "Sat" Then EndDays = EndDays + 1 End If DateCnt = DateAdd("d", 1, DateCnt)'increment the date by 1 Loop 'Calculate total work days and return the result Work_Days = WholeWeeks * 5 + EndDays Exit Function Err_Work_Days: ' If either BegDate or EndDate is Null, return a zero ' to indicate that no workdays passed between the two dates. If Err.Number = 94 Then Work_Days = 0 Exit Function Else ' If some other error occurs, provide a message. MsgBox "Error " & Err.Number & ": " & Err.Description End If End Function

Introduction.

We design Access Forms that fits into the existing Application Window Width (to display/edit records), or design popup Forms with specific size without borders or scroll bars (can be moved out of the Application Window area too) or Modal type form (popup type forms with its Modal property value set to True) that must be closed, after taking suggested action on it, before you can work with other forms.

This type of form opens one over the other (when more than one form is open) on the Application Window. You must enable Overlapping Windows by selecting Office Button - - > Access Options - - > Current Database - - > Document Window Options - - > Overlapping Windows to open the forms in this way; otherwise, they will be opened in the Tabbed style in the Application Window.

The Pop-Up Forms.

Popup Forms will open on the exact location of the Application Window, from where you have saved it during design time. If you need more details on this topic, visit this Article Link: Positioning pop-up Forms.

We can open a Microsoft Access Form and move it to a particular location of the Application Window is in the resized state, if necessary, with the MoveSize Action on the Docmd Object.

The MoveSize Action.

Here, we will learn the usage of the MoveSize Action of the DoCmd Object in VBA.

View the YouTube Demo Video given below for reference. Select the 720p HD Option from the Settings for better quality viewing.

Demo Video

When the Supplier Code is selected on the Supplier List Form, the related Product List is displayed, above the Supplier Form, to the right of the main form. The width of the Product List Form is not changed, but the height of it changes, depending on the number of items on it.

Right-click to open Large Image in New Tab/Window.

We need two tables, two Queries, and the Supplier List Form from the Northwind sample database to build this trick. You need to design a Form for the Product List. A Demo Database is given at the end of this Article to download and try out, right away.

The list of Tables, Queries, and Forms required to build this database is given below.

Tables:

Suppliers
Products

Queries:

Suppliers Extended
ProductListQ

SQL Code:

SELECT Products.[Supplier IDs], Right([Product Name],Len([product name])-17) AS Product, Products.[List Price], Products.[Quantity Per Unit]
FROM Products
WHERE (((Products.[Supplier IDs].Value)=[forms]![Supplier List]![id]));

Forms:

Supplier List
Product List

Copy and Paste the following VBA Code into the Supplier List Form's VBA Module and save the Form:

Private Sub Company_Click()
Dim frm As Form, ProductForm As String, items As Integer
Dim mainFormHeight As Integer
Dim intHeader As Integer, intFooter As Integer
Dim intH As Integer, frmchild As Form, oneInchTwips As Integer

On Error GoTo Company_Click_Err

ProductForm = "Product List"
oneInchTwips = 1440 'Form's internal value conversion factor

mainFormHeight = Me.WindowHeight

For Each frm In Forms
  If frm.Name = ProductForm Then
    DoCmd.Close acForm, ProductForm
    Exit For
  End If
Next
DoCmd.OpenForm ProductForm
Forms(ProductForm).Refresh
items = DCount("*", "ProductListQ")

Set frmchild = Forms(ProductForm)
'Calc the required height of the chid-form
'based on number of items for selected supplier
intHeader = frmchild.Section(acHeader).Height
intFooter = frmchild.Section(acFooter).Height
'0.272 inch - product item row height
intH = intHeader + items * 0.272 * oneInchTwips + intFooter
intH = intH + oneInchTwips '- one inch margin from bottom
'Move and resize the height of the child form
'4.275 inches to the right from left of the Application Window
'1.25 inches - arbitrary value taken for bottom margin
DoCmd.MoveSize 4.275 * oneInchTwips, mainFormHeight - intH, , (items * 0.272 + 1.25) * oneInchTwips

Company_Click_Exit:
Exit Sub

Company_Click_Err:
MsgBox Err & ": " & Err.Description, , "Company_Click()"
Resume Company_Click_Exit

End Sub

Private Sub Form_Current()
Me.Refresh
End Sub

Note: Don't forget to change the Overlapping Windows option in the Access Option settings mentioned in paragraph two from the top.

Open Supplier List Form.
Click on the Supplier ID Field (with the Company column heading) of any record to open the Supplier products List to display, in the Resized Product List Form, and move it to its specified location.