小编Roo*_*ven的帖子

我在STM32F107VC上使用FreeRTOS V6.1.1并且经常出现malloc错误.堆区域在链接器脚本中定义,但在几次分配后它仍然卡在pvPortMalloc()的这个循环中:

while( ( pxBlock->xBlockSize < xWantedSize ) && ( pxBlock->pxNextFreeBlock != NULL ) )
{
    pxPreviousBlock = pxBlock;
    pxBlock = pxBlock->pxNextFreeBlock;
}

pxBlock: 0x20002300
pxPreviousBlock: 0x20002300
pxNewBlockLink: 0x00
xHeapHasBeenInitialised: 0x01

链接器脚本:

/* Entry Point */
ENTRY(Reset_Handler)

/* Highest address of the user mode stack */
_estack = 0x20010000;    /* end of 64K RAM */

/* Generate a link error if heap and stack don't fit into RAM */
_Min_Heap_Size = 0;      /* required amount of heap  */
_Min_Stack_Size = …

我用Qt Designer创建了一个GUI并通过它访问它

def loadUiWidget(uifilename, parent=None):
    loader = QtUiTools.QUiLoader()
    uifile = QtCore.QFile(uifilename)
    uifile.open(QtCore.QFile.ReadOnly)
    ui = loader.load(uifile, parent)
    uifile.close()
    return ui

MainWindow = loadUiWidget("form.ui")
MainWindow.show()
children = MainWindow.children()
button1 = MainWindow.QPushButton1

"children"已经包含在UI中创建的小部件"QPushButton1","QTextBrowser1",但是不应该通过recoursive findChildren()方法访问它们？

访问.ui文件小部件的优雅方法是什么？

参考: 找到正确的实例, Load .ui文件