Adding note to PDF file

[Wilson Wade]

Hi all, I try to add notes to the pdf file, but I failed.

Below is my code:

PDFDocument *pdfDocument = createNewPDFDocument();

PDFPage *pdfPage = createNewPDFPage(pdfDocument, 0, 800, 1200);

FPDF_ANNOTATION newAnnot = FPDFPage_CreateAnnot(pdfPage->fpdfPage, FPDF_ANNOT_HIGHLIGHT);

FPDFAnnot_SetColor(newAnnot, FPDFANNOT_COLORTYPE_Color, /*R=*/250, /*G=*/210, /*B=*/0, /*A=*/255);

FS_RECTF rectF{100, 1100, 300, 200};

FS_QUADPOINTSF quadPoints;

quadPoints.x1 = 100;

quadPoints.y1 = 1100;

quadPoints.x2 = 300;

quadPoints.y2 = 1100;

quadPoints.x3 = 100;

quadPoints.y3 = 200;

quadPoints.x4 = 300;

quadPoints.y4 = 200;

FPDFAnnot_SetAP(newAnnot, FPDF_ANNOT_APPEARANCEMODE_NORMAL, charStringToFPDF_WIDESTRING("Hello Note!"));

FPDFAnnot_AppendAttachmentPoints(newAnnot, &quadPoints);

FPDFAnnot_SetRect(newAnnot, &rectF);

FPDFPage_CloseAnnot(newAnnot);

FPDFPage_GenerateContent(pdfPage->fpdfPage);

savePDFDocumentToFile(pdfDocument, fd);

closePDFDocument(pdfDocument);

I got the result like file 1, But the result I want is like file 2. Any help is much appreciated.