CodePudding user response:
First of all, the combo box is called ComboBox, secondly, what do you want to ask what?CodePudding user response:
Automatically query?CodePudding user response:
ComboBox1 - & gt; The Items - & gt; Add (" content 1 ");ComboBox1 - & gt; The Items - & gt; Add (" content 2 ");
ComboBox1 - & gt; The Items - & gt; Add (" content ");
//ComboBox1 - & gt; Content of the Text="1";
ComboBox1 - & gt; ItemIndex=1;
CodePudding user response:
The designer set AutoDropDown=true xe7 effectivelyCodePudding user response:
Drag controls in the items property after the write operation has the drop-down options