WM_SETTEXT消息发送到tooltips_class32句柄 [英] WM_SETTEXT message send to tooltips_class32 handle

问题描述

您好，专家
嗨想要为工具提示窗口设置文本
我编写了以下代码以从工具提示中读取文本:

Hi Experts
Hi Want to set the text for tooltips window
I write the following code for reading text from tooltips :

hWndToolTip = ::FindWindow("tooltips_class32",NULL);
iToolTipLen = ::SendMessage(hWndToolTip,WM_GETTEXTLENGTH,0,0);
strToolTipText = new TCHAR[iToolTipLen]; // Allocate the buffer
::SendMessage(hWndToolTip,WM_GETTEXT,(WPARAM)iToolTipLen+1,(LPARAM)strToolTipText ); // Get the needed text in strToolTipText

现在，我尝试通过使用以下方法在同一工具提示窗口中设置文本

Now I am trying to set the text in same tooltips window by using following aproach

char * strMsg = "This user defined tooltip";
SendMessageW(hWndToolTip, WM_SETTEXT, 0, (LPARAM)strMsg);

但无法在运行时更改工具提示文本
你能帮我解释一下这段代码出了什么问题吗?我还需要做些额外的事情吗?

感谢adv.

but am not able to change tooltips text at runtime
Can u please help me to explain what is going wrong with this code n what extra I need to do???

Thanks in adv.

推荐答案

SendMessageW ???? => SendMessage(无W)

并且第一个代码段中的缓冲区需要更长

SendMessageW??? => SendMessage (without W)

and the buffer in the first snippet needs to be longer

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