New subject: [Bug 58677] GetGlyphOutlineW returns wrong values

6 Sep 2025


      http://bugs.winehq.org/show_bug.cgi?id=58677
Bug ID: 58677
           Summary: GetGlyphOutlineW returns wrong values
           Product: Wine
           Version: 10.14
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdi32
          Assignee: wine-bugs@winehq.org
          Reporter: kyle.kcsoftwares@gmail.com
      Distribution: ---
GetGlyphOutlineW returns wrong values
Test program :
#include <windows.h>
#include <cstdio>
using namespace std;
int main(void)
{
    LOGFONT lf;
    ZeroMemory(&lf, sizeof(lf));
    lf.lfHeight = -14;
    lf.lfCharSet = DEFAULT_CHARSET;
    lstrcpy(lf.lfFaceName, TEXT("Tahoma"));
    if (HFONT hFont = CreateFontIndirect(&lf))
    {
        if (HDC hDC = CreateCompatibleDC(NULL))
        {
            HGDIOBJ hFontOld = SelectObject(hDC, hFont);
            {
                MAT2 mat2;
mat2.eM11.fract = 0;
                mat2.eM12.fract = 0;
                mat2.eM21.fract = 0;
                mat2.eM22.fract = 0;
mat2.eM11.value = 1;
                mat2.eM12.value = 0;
                mat2.eM21.value = 0;
                mat2.eM22.value = 1;
GLYPHMETRICS gm;
                DWORD dwRet = GetGlyphOutlineW(hDC, L'A', GGO_METRICS, &gm, 0,
NULL, &mat2);
                printf("dwRet: 0x%lX, GetLastError(): %ld\n", dwRet,
GetLastError());
                printf("gmBlackBoxX: %u\n", gm.gmBlackBoxX);
                printf("gmBlackBoxY: %u\n", gm.gmBlackBoxY);
                printf("gmptGlyphOrigin.x: %ld\n", gm.gmptGlyphOrigin.x);
                printf("gmptGlyphOrigin.y: %ld\n", gm.gmptGlyphOrigin.y);
                printf("gmCellIncX: %d\n", gm.gmCellIncX);
                printf("gmCellIncY: %d\n", gm.gmCellIncY);
            }
            SelectObject(hDC, hFontOld);
            DeleteDC(hDC);
        }
        DeleteObject(hFont);
    }
    return 0;
}
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[Bug 58677] New: GetGlyphOutlineW returns wrong values