QObject::connect: invalid null parameter 错误通常发生在 Qt 框架中,当尝试使用 QObject::connect 函数连接信号和槽时,如果提供的任何参数(通常是发送者、接收者、信号或槽)为 nullptr,就会触发此错误。以下是对该问题的详细分析和解决步骤: 1. 确认 QObject::connect 函数的使用方法QObject::connect ...
I am getting an error: :0 : Warning: QObject::connect: invalid null parameter on startup. This is consistently reproducible since 7e3ad7b. As far as I can tell the problem seems to be that av is null in lines 237-238 in above mentioned commit:CoreAV* av = core->getAv(); connect...
QObject::connect: invalid null parameter info: OBS 0.14.1 (linux) info: --- info: --- info: audio settings reset: samples per sec: 44100 speakers: 2 The X11 connection broke: No error (code 0) XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" after 21 ...
Binary v0.9.3-311-gaca2d21 on Mac Load sample dataset Quit or reset (File -> Reset) tomviz. Output message prints QObject::connect: invalid null parameter (:0, )
named slot on all objects. \sa connect() */ bool QObject::disconnectconst QObject *sender, const char *signal, const QObject *receiver const char *method) { if (sender == 0 || (receiver == 0 && method != 0)) { ("Object::disconnect: Unexpected null parameter"); return false;...