{"id":343,"date":"2024-02-21T16:21:47","date_gmt":"2024-02-21T16:21:47","guid":{"rendered":"https:\/\/xojo.itbib4you.be\/?page_id=343"},"modified":"2025-06-22T14:28:57","modified_gmt":"2025-06-22T14:28:57","slug":"manage-all-your-accounts","status":"publish","type":"page","link":"https:\/\/xojo.itbib4you.be\/index.php\/manage-all-your-accounts\/","title":{"rendered":"Manage All Your Accounts"},"content":{"rendered":"\n
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Overview<\/a><\/div>\n<\/div>\n\n\n\n

Introduction<\/h2>\n\n\n\n

In the previous lesson we developed an application to manage ourCheckingAccount<\/mark>. In this new lesson we will further expand this application to be able to process the balance of multiple bank accounts. In this lesson we will also introduce a new control: DesktopPopupMenu<\/mark>.<\/p>\n\n\n\n

DesktopPopupMenu<\/h2>\n\n\n
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\"\"<\/figure>\n<\/div>\n\n\n

The DesktopPopupMenu<\/mark> displays a list of items. The user can select one element from the list. The DesktopPopupMenu<\/mark> will be used to select one of our accounts.<\/p>\n\n\n\n

The following Properties<\/mark> are commonly used:<\/p>\n\n\n\n

Property<\/th>Type<\/th>Description<\/th><\/tr><\/thead>
LastRowIndex<\/td>Integer<\/td>The number of the last item in the DesktopPopupMenu (the first element in the list is zero).<\/td><\/tr>
RowCount<\/td>Integer<\/td>The number of items in the DesktopPopupMenu.<\/td><\/tr>
SelectedRowIndex<\/td>Integer<\/td>Get or set the selected item number.<\/td><\/tr>
SelectedRowText<\/td>String<\/td>The text of the selected item.<\/td><\/tr><\/tbody><\/table>
DesktopPopupMenu Properties<\/figcaption><\/figure>\n\n\n\n

The following methods<\/mark> are often used:<\/p>\n\n\n\n

Method<\/th>Type<\/th>Description<\/th><\/tr><\/thead>
AddRow(item)<\/td>String<\/td>Appends the item to the end of the list.<\/td><\/tr>
RemoveAllRows<\/td><\/td>Removes all elements in the list<\/td><\/tr><\/tbody><\/table>
DesktopPopupMenu Methods<\/figcaption><\/figure>\n\n\n\n

When another item is selected, the following event<\/mark> occurs:<\/p>\n\n\n\n

Event<\/th>Description<\/th><\/tr><\/thead>
SelectionChanged<\/td>Another item in the list has been selected.<\/td><\/tr><\/tbody><\/table>
DesktopPopupMenu Events<\/figcaption><\/figure>\n\n\n\n

Modifications to the application<\/h2>\n\n\n\n

Add a DesktopPopupMenu <\/h3>\n\n\n\n

The DesktopPopupMenu<\/mark> control is available in the library<\/mark> under the Pickers<\/mark> section. Drag this control on the AccountWindow<\/mark>. Change the Name<\/mark> property to AccountPopup<\/mark>. <\/p>\n\n\n\n

It is good programming practice to end the name of a DesktopPopupMenu<\/mark> with the suffix 'Popup<\/mark>'.<\/pre>\n\n\n
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\"\"<\/figure>\n<\/div>\n\n\n
In the Inspector<\/mark>, you can add items to AccountPopup<\/mark> using the Initial Value<\/mark> property. Initialise the control with the following Strings: CheckingAccount<\/mark>, RetirementAccount<\/mark> and SavingsAccount<\/mark>.<\/p>\n\n\n\n
<\/div>\n\n\n\n
Create new Instances<\/h3>\n\n\n\n
Add the following Properties<\/mark> to AccountWindow<\/mark>: RetirementAccount<\/mark> and SavingsAccount<\/mark>.<\/p>\n\n\n\n
In the Opening<\/mark> event, create instances of the class Account<\/mark> for the newly defined RetirementAccount<\/mark> and SavingsAccount<\/mark> properties:<\/p>\n\n\n\n
CheckingAccount =  New Account\nRetirementAccount = New Account\nSavingsAccount =  New Account<\/pre>\n\n\n\n
DepositButton: Pressed<\/h3>\n\n\n\n
The account name shown in AccountPopup<\/mark> determines which account should be addressed. The account name is available from the SelectedRowText<\/mark> property:<\/p>\n\n\n\n
Var<\/mark> accountName As String<\/mark> \naccountName = AccountPopup.SelectedRowText\n\nSelect Case<\/mark> accountName\nCase<\/mark> \"CheckingAccount\"\n  CheckingAccount.DepositMoney(1500.00)\nCase<\/mark> \"SavingsAccount\"\n  SavingsAccount.DepositMoney(600.00)\nCase<\/mark> \"RetirementAccount\"\n  RetirementAccount.DepositMoney(200.00)\nEnd<\/mark> <\/pre>\n\n\n\n
Use camel case<\/mark> (first word in the name is a lower case letter, all subsequent words in the name start with a capital letter) for local variables declared in methods or events.<\/pre>\n\n\n\n
WithdrawButton: Pressed<\/h3>\n\n\n\n
The Pressed<\/mark> event for WithdrawButton<\/mark> is quite similar to the Pressed<\/mark> event of DepositButton<\/mark>:<\/p>\n\n\n\n
Var<\/mark> accountName As String<\/mark> \naccountName = AccountPopup.SelectedRowText\n\nSelect Case<\/mark> accountName\nCase<\/mark> \"CheckingAccount\"\n  CheckingAccount.WithdrawMoney(275.00)\nCase<\/mark> \"SavingsAccount\"\n  SavingsAccount.WithdrawMoney(150.00)\nCase<\/mark> \"RetirementAccount\"\n  RetirementAccount.WithdrawMoney(100.00)\nEnd<\/mark> <\/pre>\n\n\n\n
ShowButton: Pressed<\/h3>\n\n\n\n
The ShowButton<\/mark> event can be developed in the same way:<\/p>\n\n\n\n
Var<\/mark> accountName As String<\/mark> \naccountName = AccountPopup.SelectedRowText\n\nSelect Case<\/mark> accountName\nCase<\/mark> \"CheckingAccount\"\n  BalanceLabel.Text = \"The balance of the checking account = \" + _ \n     CheckingAccount.GetBalance.ToString(locale.current)\nCase<\/mark> \"SavingsAccount\"\n  BalanceLabel.Text = \"The balance of the savings account = \" + _ \n     SavingsAccount.GetBalance.ToString(locale.current)\nCase<\/mark> \"RetirementAccount\"\n  BalanceLabel.Text = \"The balance of the retirement account = \" + _ \n     RetirementAccount.GetBalance.ToString(locale.current)\nEnd<\/mark><\/pre>\n","protected":false},"excerpt":{"rendered":"
Introduction In the previous lesson we developed an application to manage ourCheckingAccount. In this new lesson we will further expand this application to be able to process the balance of multiple bank accounts. In this lesson we will also introduce a new control: DesktopPopupMenu. DesktopPopupMenu The DesktopPopupMenu displays a list of items. The user can … Continue reading “Manage All Your Accounts”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-343","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/pages\/343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/comments?post=343"}],"version-history":[{"count":19,"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/pages\/343\/revisions"}],"predecessor-version":[{"id":593,"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/pages\/343\/revisions\/593"}],"wp:attachment":[{"href":"https:\/\/xojo.itbib4you.be\/index.php\/wp-json\/wp\/v2\/media?parent=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}