Manage a shared image collection

Step 1Prepare a safe practice project#

Extract the archive into a new writable folder, separate from your own application. Open ImageList.mcbproj in McBasic™. Keep every declared source, layout, resource and migration file together.

To reconstruct it yourself, create a DesktopApp project and add the files declared below. In the complete project, follow these steps as a guided rebuild: replace each named source file once and Check after all its procedures are present.

{
  "schemaVersion": 1,
  "projectId": "52cc3a4e-18d8-4e1c-b6ea-548d746ac151",
  "name": "ImageListSample",
  "kind": "DesktopApp",
  "ai": {
    "storeChatsInProject": false
  },
  "language": {
    "dialect": "McBasic1",
    "requireExplicit": true,
    "compare": "Binary",
    "defaultArrayBase": 0
  },
  "application": {
    "bundleIdentifier": "com.mcbasic.samples.imagelist",
    "version": "0.1.0",
    "buildNumber": "1",
    "startupFormId": "form-main",
    "shutdownMode": "OnStartupFormClosed"
  },
  "forms": [
    {
      "id": "form-main",
      "typeName": "frmMain",
      "layout": "Forms/frmMain.form.json",
      "code": "Forms/frmMain.bas"
    }
  ],
  "modules": [],
  "classes": [],
  "tests": [],
  "references": [],
  "resources": [
    {
      "name": "Logo",
      "path": "Resources/logo.png"
    }
  ],
  "targets": [
    "osx-arm64"
  ],
  "capabilities": []
}

Step 2Build the Form and set its properties#

frmMain

Select the Form first and set its properties. Add containers before their children. These are initial Designer values, not statements to paste into a procedure.

Step 3Connect the events explicitly#

frmMain

Step 4Enter the complete behavior#

Open the named source file. Enter declarations first, then every procedure. Expand a procedure for its full body, or copy the complete file. Helpers are required: do not stop after entering the first Click handler.

Forms/frmMain.bas

Enter these declarations at file scope, before the procedures.

Option Explicit

Private Sub Form_Load()
    If imgListMain.Count = 2 And imgListMain.Error = "" Then
        If imgListMain.Images.Item("Logo") = Resources.Logo Then
            lblStatus.Caption = "2 images loaded. Named and one-based lookup are available."
        End If
    Else
        lblStatus.Caption = imgListMain.Error
    End If
End Sub

Private Sub cmdClose_Click()
    Unload Me
End Sub

Option Explicit

Private Sub Form_Load()
    If imgListMain.Count = 2 And imgListMain.Error = "" Then
        If imgListMain.Images.Item("Logo") = Resources.Logo Then
            lblStatus.Caption = "2 images loaded. Named and one-based lookup are available."
        End If
    Else
        lblStatus.Caption = imgListMain.Error
    End If
End Sub

Private Sub cmdClose_Click()
    Unload Me
End Sub

Step 5Keep resources and storage reproducible#

Keep the following files at their declared relative paths. Apply migrations before the first query. Media and report resources must travel with the build.

Step 6Check, run and test the result#

Save all files and run Check. Resolve diagnostics before Run. Developer CLI users can work from the extracted folder:

mcbasic check ImageList.mcbproj
mcbasic run ImageList.mcbproj

Acceptance checklist

• Open the project with its resource files present.
• Run and verify the image collection status.
• Inspect the collection’s keys and consumers in the Designer.

Step 7Make one change and repeat the tests#

Reference the same image list from an additional compatible control.

Save a working Git checkpoint first. Change one behavior, Check again and repeat the acceptance checklist. Compare with the downloaded solution if a regression appears.