Win32控件richedit，如何使用EM_FINDTEXT win32消息查找字符串 [英] Win32 control richedit, how to find string by using EM_FINDTEXT win32 messages

问题描述

win32 RichEdit控件支持大量单词。我想在这种控制中找到一些字符串。我在msdn上找到了win32消息

 EM_FINDTEXT 

。如果找到了spfecified字符串，则返回值将是控件文本的索引。



我试过了，但它不起作用。



我尝试了什么：



这里有一些简单的代码。

 int result = 0; 
 FINDTEXT findtext_param; 
 
 RichEdit1-> Text =你好，这是来自你的测试。; 
 
 char find_str [256] =from; 
 findtext_param.lpstrText = find_str; 
 findtext_param.chrg.cpMin = 0; 
 findtext_param.chrg.cpMax = -1; 
 
 result = SendMessage（RichEdit1-> Handle，EM_FINDTEXT，FR_DOWN，（LPARAM）& findtext_param）; 
 if（result> = 0）ShowMessage（找到字符串。）; 
 else ShowMessage（找不到字符串。）; 
 

你可以看到控件的值已经设置，它仍然返回-1。

代码中有什么问题？

解决方案

您需要先选择范围：

  int  result =  0 ; 
 FINDTEXT findtext_param; 
 
 RichEdit1-> Text =  您好，这是来自younth的测试。< /跨度>; 
 
  char  find_str [ 256 ] =   from; 
 findtext_param.lpstrText = find_str; 
 findtext_param.chrg.cpMin =  0 ; 
 findtext_param.chrg.cpMax =  -   1 ; 
 
  //  缺少此部分 
 CHARRANGE cr; 
 cr.cpMin =  -   1 ; 
 cr.cpMax =  -   1 ; 
 
 SendMessage（RichEdit1-> Handle，EM_EXSETSEL， 0 ，（LPARAM）& cr）; 
  //  <  -   
 
 result = SendMessage（ RichEdit1->手柄，EM_FINDTEXT，FR_DOWN，（LPARAM）及findtext_param）; 
  if （结果> =  0 ）ShowMessage（ 找到字符串。）; 
  else  ShowMessage（ 找不到字符串。 ）; 

win32 RichEdit control supports large count of words. i'm tring to find some string in this kind of control. I find the win32 message

EM_FINDTEXT

on msdn. if the spfecified string was found , the return value would be the index of the control's text.

I tried,but it does not work.

What I have tried:

here is some simple codes.

int result = 0;
FINDTEXT findtext_param;

RichEdit1->Text = "Hello,this is a test from younth.";

char find_str[256] = "from";
findtext_param.lpstrText = find_str;
findtext_param.chrg.cpMin = 0;
findtext_param.chrg.cpMax = -1;

result = SendMessage(RichEdit1->Handle,EM_FINDTEXT,FR_DOWN,(LPARAM)&findtext_param);
if(result >= 0) ShowMessage("string found.");
else ShowMessage("string not found.");

you can see the value of the control has been setted,it still returns -1.
what's wrong in the code ?

解决方案

You need to select your range first:

int result = 0;
FINDTEXT findtext_param;

RichEdit1->Text = "Hello,this is a test from younth.";

char find_str[256] = "from";
findtext_param.lpstrText = find_str;
findtext_param.chrg.cpMin = 0;
findtext_param.chrg.cpMax = -1;

// Missing this part
	CHARRANGE cr;
	cr.cpMin = -1;
	cr.cpMax = -1;

	SendMessage(RichEdit1->Handle, EM_EXSETSEL, 0, (LPARAM)&cr);
// <--

result = SendMessage(RichEdit1->Handle,EM_FINDTEXT,FR_DOWN,(LPARAM)&findtext_param);
if(result >= 0) ShowMessage("string found.");
else ShowMessage("string not found.");

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