properties

问题 I have tabcontrol component on my form. After I put XPManifest, its color became white, I want to change it, but couldn't find color property. And I don't want to remove XPManifest as well. Is there any way to solve this issue? 回答1: To change the color of a TTabControl must put the OwnerDraw property to true false and write your own code to draw the tabs and the background in the OnDrawTab Event. see this example. procedure TForm38.TabControl1DrawTab(Control: TCustomTabControl; TabIndex:

问题 In Python, we can use the @property decorator to manage access to attributes. For example, if we define the class: class C: def __init__(self,value): self._x = value @property def x(self): """I'm the 'x' property.""" return self._x we can get the value of x, but not change it: c = C(1) #c.x = 4 # <= this would raise an AttributeError: can't set attribute However, if the attribute is of a mutable type (e.g., a list), we can set a different value for a position of the attribute: c = C([0,0]) c

问题 When I try to do code shown below I get error : TypeError: 'str' object is not callable email2_elem = driver.find_element_by_xpath("/html/body/div[1]/div[2]/div[1]/div[1]/div[1]/form[1]/div[1]/input[1]").text() 回答1: This error message... TypeError: 'str' object is not callable ...implies that your program have invoked a function() which is actually a property . As per selenium.webdriver.remote.webelement text is a property . So, you can't invoke text() as a function. Hence you see the error.

问题 When I try to do code shown below I get error : TypeError: 'str' object is not callable email2_elem = driver.find_element_by_xpath("/html/body/div[1]/div[2]/div[1]/div[1]/div[1]/form[1]/div[1]/input[1]").text() 回答1: This error message... TypeError: 'str' object is not callable ...implies that your program have invoked a function() which is actually a property . As per selenium.webdriver.remote.webelement text is a property . So, you can't invoke text() as a function. Hence you see the error.

问题 When I try to do code shown below I get error : TypeError: 'str' object is not callable email2_elem = driver.find_element_by_xpath("/html/body/div[1]/div[2]/div[1]/div[1]/div[1]/form[1]/div[1]/input[1]").text() 回答1: This error message... TypeError: 'str' object is not callable ...implies that your program have invoked a function() which is actually a property . As per selenium.webdriver.remote.webelement text is a property . So, you can't invoke text() as a function. Hence you see the error.

问题 I have an Objective-C++ class that I wish to have a property which is a C++ std::vector<std::string> . I've declared it like this: @interface WordModel : NSObject @property std::vector<std::string> words; @end When I attempt to add words to the vector nothing happens. For example, in the -init method, I'm doing this: std::string nextLine; while(wordsFile.good()) { std::getline(wordsFile, nextLine); if (nextLine.length() > 0) { self.words.push_back(nextLine); } } After calling push_back() the

问题 I have an Objective-C++ class that I wish to have a property which is a C++ std::vector<std::string> . I've declared it like this: @interface WordModel : NSObject @property std::vector<std::string> words; @end When I attempt to add words to the vector nothing happens. For example, in the -init method, I'm doing this: std::string nextLine; while(wordsFile.good()) { std::getline(wordsFile, nextLine); if (nextLine.length() > 0) { self.words.push_back(nextLine); } } After calling push_back() the

问题 Let's say, we have a variable, which we want named Fubar Let's say that Fubar is a String ! That means, we would define Fubar as so: public string Fubar; Now, let's say we want Fubar to have a getter and setter (or in other words, become a C# property)! private string Fubar; public string Fubar_gs { get { //Some fancy logic return Fubar; } set { //Some more fancy logic Fubar = value; } } Well great! That is all fine and dandy, EXCEPT, what if I wanted the PROPERTY to be named Fubar, not the

问题 I am currently using Visual Studio, and I don't know if this is a glitch or not, but when I go into the form properties, and show the events, there are two events called KeyDown and KeyUp . Now when I do the same for a PictureBox , it has way less events and no KeyDown and KeyUp events. Does the PictureBox support less events then other things? Is this a glitch? Screenshot of Form1 properties: Screenshot of PictureBox1 properties: 回答1: Its not a glitch. Its the way it is. You don't type in

问题 I am currently using Visual Studio, and I don't know if this is a glitch or not, but when I go into the form properties, and show the events, there are two events called KeyDown and KeyUp . Now when I do the same for a PictureBox , it has way less events and no KeyDown and KeyUp events. Does the PictureBox support less events then other things? Is this a glitch? Screenshot of Form1 properties: Screenshot of PictureBox1 properties: 回答1: Its not a glitch. Its the way it is. You don't type in