It could be helpful to describe what are you trying to do, after which modifications / changes you experience issue and which messages come from OCCT's messenger (redirected into std::cout by default).
Archived discussion
why all the text disappear ？
OpenCASCADE-7.6.0-vc14,x86
why all the text disappear,is there something wrong,which part is responsible for the text.
best wishes
Discussion
4 archived replies
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thanks，i try to cout some message：
“Font_FontMgr, error: unable to find any font!
TKOpenGl | Type: Error | ID: 0 | Severity: High | Message:
Font 'Courier' is not found in the system!
Font_FontMgr, error: unable to find any font!
TKOpenGl | Type: Error | ID: 0 | Severity: High | Message:
Font 'sans-serif' is not found in the system!
”
how can i deal with this？
You may install fonts in your system or register own fonts in Font_FontMgr and using them in Graphic3d_AspectText3d. If you believe that these fonts are present in your system, you might need to traverse/debug Font_FontMgr to find a reason, why it is unable to find standard fonts on your system (see also "vfont" command in Draw Harness).
okay，i will try，Thank you very much！