函数在EditBox winApit中获取选定的文本 [英] Function get selected text in EditBox winApit

问题描述

嗨
是否有任何WinAPI可以在编辑框"中获取选定的文本?取光标的初始位置和最终位置?我告诉editbox的HWND的函数，然后函数返回所选择的文本?

Alexandre

Hi
Is there any WinAPI to get the selected text in an Edit Box? Take the initial and final position of the cursor? A function where I tell the HWND of editbox and the function return, the selected text?

Alexandre

推荐答案

首次使用

EM_GETSEL

检索当前选择的开始和结束的字符索引.

对于少量文本的编辑控件，可以使用窗口消息
WM_GETTEXT 检索整个窗口文本并选择它的适当部分.

对于包含大量文本的多行编辑控件，此方法可能效率不高.在这种情况下，您可以使用

EM_GETHANDLE

获取编辑控件使用的缓冲区的内存句柄.使用LocalLock获取指向该缓冲区的内存指针.然后，您可以直接访问该缓冲区，并使用EM_GETSEL返回的字符索引检索选择的文本.

First use

EM_GETSEL

to retrieve the character indices of the begin and end of the current selection.

For edit controls with small amounts of text you can use the window message
WM_GETTEXT to retrieve the entire window text and select the appropriate part of it.

For multi-line edit controls with huge amounts of text, this method can be inefficient. In that case you can use

EM_GETHANDLE

to get the memory handle of the buffer that the edit control uses. Use LocalLock to get a memory pointer to that buffer. Then you can access that buffer directly and retrieve the select text by using the character indices that EM_GETSEL has returned.

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