目录
error CS0246: 未能找到类型或命名空间名称“DllImport”(是否缺少 using 指令或程序集引用?)
其他信息: 对 PInvoke 函数“useQtDllTest1!useQtDllTest1.Form1::screenShotToLocal”的调用导致堆栈不对称。原因可能是托管的 PInvoke 签名与非托管的目标签名不匹配。请检查 PInvoke 签名的调用约定和参数与非托管的目标签名是否匹配。
Qt程序中文乱码
QT 5.12.12 QWebEngineView 浏览器点击链接崩溃(点击忽略有时候不崩溃)
Qt 实现程序无边框效果,并支持鼠标拖动
获取电脑第一块硬盘的序列号
QWebEngineView 支持H5 Video标签 allowFullScreen 视频最大化最小化
windows静默卸载程序命令
error CS0246: 未能找到类型或命名空间名称“DllImport”(是否缺少 using 指令或程序集引用?)
using System.Runtime.InteropServices;
[DllImport("qtdialog.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern bool screenShotToLocal(string sPath);
在DllImport(“qtdialog.dll”)后面增加 CallingConvention = CallingConvention.Cdecl)
Qt程序中文乱码
执行字符编码 可以在每个cpp文件添加
#pragma execution_character_set("utf-8")
QT 5.12.12 QWebEngineView 浏览器点击链接崩溃(点击忽略有时候不崩溃)
QWebEngineView *MyWebengineView::createWindow(QWebEnginePage::WebWindowType type)
{
if(type == QWebEnginePage::WebBrowserTab)
{
QWebEnginePage* new_page = new QWebEnginePage(this->page()->profile(), this);
this->setPage(new_page);
}
return this;
}
Qt 实现程序无边框效果,并支持鼠标拖动
# .h
// 用来实现鼠标拖拽
bool m_bMove;
QPoint m_pos;
protected:
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
# .cpp
# QUpdateResource 是自己编写的类
setWindowFlags(Qt::FramelessWindowHint);
void QUpdateResource::mousePressEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton)
{
m_bMove = true;
m_pos = event->globalPos();
}
}
void QUpdateResource::mouseMoveEvent(QMouseEvent *event)
{
if (m_bMove)
{
QPoint moveDistance = event->globalPos() - m_pos;
m_pos = event->globalPos();
move(this->pos() + moveDistance);
}
}
void QUpdateResource::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton)
m_bMove = false;
}
获取电脑第一块硬盘的序列号
# cmd命令
wmic diskdrive where index=0 get serialnumber
#代码
QString strCommand = QString("wmic diskdrive where index=0 get serialnumber");
QProcess p;
p.start(strCommand);
p.waitForFinished();
QString strResult = QString::fromLocal8Bit(p.readAllStandardOutput());
QStringList strList = strResult.split(" ", QString::SkipEmptyParts);
strResult = strResult.remove(strList.last(), Qt::CaseInsensitive);
strResult = strResult.replace("\r", "");
strResult = strResult.replace("\n", "");
strResult = strResult.simplified();
strResult = strResult.remove(QString("serialnumber"), Qt::CaseInsensitive);
strResult = strResult.trimmed();
QWebEngineView 支持H5 Video标签 allowFullScreen 视频最大化最小化
#include <QWebEngineFullScreenRequest>
ui->webView->settings()->setAttribute(QWebEngineSettings::FullScreenSupportEnabled, true);
connect(ui->webView->page(), &QWebEnginePage::fullScreenRequested, this, [=] (QWebEngineFullScreenRequest pageRequeset)
{
pageRequeset.accept();
});
windows静默卸载程序命令
/C wmic product where '(name=\"Java 8 Update 291\")' call uninstall
Java 8 Update 291 为程序名称