即使是新建工程例程都报错。 版本 qt 5.6.0 qt creator 4.11.0 报错 main.cpp:96: error: cannot initialize object parameter of type ‘QWidget’ with an expression of type ‘MainWindow’ main.cpp:89: error: no matching member function for call to ‘process’ 总之就是各种no matching和cannot ini...
error: cannot initialize a parameter of type 'QGraphicsScene *' with an lvalue of type 'xxxx *' 原因是 需要引入 头文件 #include
* main.cpp:7:1: error: cannot initialize a parameter of type 'const char *' with an rvalue of type 'int' * qtest.h:446:5: note: expanded from macro 'QTEST_MAIN' * qtest.h:364:74: note: expanded from macro 'QTEST_SET_MAIN_SOURCE_PATH' * 16:30: note: expanded from here ...
error: cannot initialize object parameter of type 'Ui_MainWindow' with an expression of type 'Ui::MainWindow'.解决办法:打开一下mainwindow.ui即可 Qt Ui界面中添加控件后改控件对象的名字需要回车确定 鼠标点其他地方等其他操作都不能确定,将会导致调用时无法识别该对象 Qt调用NI采集卡 要使用32位编译器 ...
问将QT资源转换为::std::istream&EN版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人...
The version parameter is a string literal that specifies which version of Qt the application requires (e.g., "4.0.2").Example:#include <QApplication> #include <QMessageBox> int main(int argc, char *argv[]) { QT_REQUIRE_VERSION(argc, argv, "4.0.2") QApplication app(argc, argv); ....
These functions take a template type as argument: You can retrieve the absolute value of an object using the qAbs() function, and you can bound a given object's value by given minimum and maximum values using the qBound() function. You can retrieve the minimum and maximum of two given ...
This may only be set once to initialize the layer. referenceScale : double The reference scale for the layer (read-only). The reference scale of the layer is the scale at which a client should view the layer for the text to appear at its authored size. If the client changes the vie...
Initializing a String One way to initialize a QString is simply to pass a const char * to its constructor. For example, the following code creates a QString of size 5 containing the data "Hello": QString str = "Hello"; QString converts the const char * data into Unicode using the ...
int bool_value) { handle_openssl_init = bool_value; } int SSLSocket_initialize(void) ...