Gestion De Stock — Windev Pdf ((free))

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3.3 Automatic PDF Invoice after a Stock Out

The most practical example: When a sale is recorded (stock decreases), automatically generate and email a PDF invoice.

Process in the "Validate Sale" button:

// 1. Record the sale transaction
Transaction.PRODUCT_ID = nSelectedProduct
Transaction.QUANTITY = -nQuantitySold
Transaction.TRANSACTION_TYPE = "Sale"
Transaction.DOCUMENT_REF = sInvoiceNumber
HAdd(Transaction)

// 2. Update current stock
UpdateStock(nSelectedProduct, -nQuantitySold) gestion de stock windev pdf


// 3. Generate PDF Invoice
iDestination = iPDF
iMerge = iNoMerge
PDF_Path = "C:\Invoices\INV_" + sInvoiceNumber + ".pdf"
iPrintReport(RPT_Invoice, iPDF, PDF_Path)


// 4. (Optional) Send via email with WINDEV's Email management
EmailStartSession("smtp.yourcompany.com")
EmailSend("stock@company.com", Customer.Email, "Your Invoice " + sInvoiceNumber, "Please find attached PDF", PDF_Path)

2.1 Displaying Stock in a Looper or Table Control

Create a window (WIN_MainStock). Drop a Table control bound to the PRODUCT file. Here is comprehensive content about "Stock Management with

WLanguage code in the table display:

// Colorize low stock rows
IF TABLE_PRODUCT.CURRENT_STOCK < TABLE_PRODUCT.MIN_STOCK_ALERT THEN
    TABLE_PRODUCT[MyRow].Color = LightRed
    TABLE_PRODUCT[MyRow].FontColor = DarkRed
ELSE
    TABLE_PRODUCT[MyRow].Color = White
END

2. Développement de l'Interface (Les Fenêtres)

WinDev excelle dans la création rapide d'interfaces via le RAD (Rapid Application Development), mais un développement manuel permet une meilleure personnalisation.

5.3. Audit Trail

Add UserID and Timestamp to STOCK_MOVEMENT to track who changed stock.

2.2 Database Structure (HyperFileSQL)

Product (ID_Product INT PRIMARY KEY,  
         Code VARCHAR(20),  
         Name VARCHAR(100),  
         Category VARCHAR(50),  
         UnitPrice DECIMAL(10,2),  
         QtyStock INT);

Movement (ID_Movement INT PRIMARY KEY,

Date DATETIME,

Type (IN/OUT),

Quantity INT,

ID_Product INT REFERENCES Product);
 TRANSACTION_ID  (Automatic numeric) 
  PRODUCT_ID  (Numeric

Issue 2: HyperFileSQL concurrency when printing stock reports

Solution: Use HOpenTransaction / HCloseTransaction when reading stock levels for a massive PDF report to ensure you are not reading a partially updated inventory.

4. PDF Generation in WINDEV

WINDEV provides a native Report Editor (iRapport) that can export to PDF, Excel, Word, or HTML. No external DLLs are required.

1.2 The TRANSACTION Table (Movement Log)