THPDFPage.DrawQRCode Method
Provides draw qrcode behaviour for the page drawing workflow. Use it when the surrounding API family needs explicit control over PDF objects, page content, resources, conformance, or diagnostics
Declaration
function DrawQRCode(const Data: AnsiString; X, Y: Single; ModuleSize: Single= 2; ECLevel: THPDFQRECLevel= qrM; Color: TColor= clBlack): Integer;Unit
HPDFDoc
Parameters
| Name | Purpose |
|---|---|
Data | Raw byte payload embedded or validated by this API |
X | Page coordinate or size value expressed in the current HotPDF coordinate space |
Y | Page coordinate or size value expressed in the current HotPDF coordinate space |
ModuleSize | Input used by DrawQRCode |
ECLevel | Version, conformance, or nesting level used by the workflow |
Color | Color component or color value used by the painting or resource operation |
Return value
Returns an Integer value
Usage notes
- Use this API in the page drawing workflow before the affected page, resource, field, or catalog object is finalised
- Keep object names, field names, resource names, and returned handles stable until the document is finalised
- Page-level changes affect subsequent operators on the same page; save and restore graphics state when a temporary setting should not leak