Tooltip 不能显示

Tooltip 不能显示

    SendMessage ( m_hTooltip, TTM_DELTOOL, 0, (LPARAM)&ti );

返回0, GetLastError()=1400 ERROR_INVALID_WINDOW_HANDLE

 

Root cause:

typedef struct tagTOOLINFOW {

    UINT cbSize;

    UINT uFlags;

    HWND hwnd;

    UINT_PTR uId;

    RECT rect;

    HINSTANCE hinst;

    LPWSTR lpszText;

#if (_WIN32_IE >= 0x0300)

    LPARAM lParam;

#endif

#if (_WIN32_WINNT >= 0x0501)

    void *lpReserved;

#endif

} TTTOOLINFOW, NEAR *PTOOLINFOW, *LPTTTOOLINFOW;

编译的时候_WIN32_WINNT=0x0501，但是调用的ComCtrl32.dll是老版本的，导致传进去的TOOLINFO不匹配。

Solution:

给工程添加manifest:

命名为<filename>.exe.manifest

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">

<assemblyIdentity

         name="filename"

         processorArchitecture="x86"

         version="1.0.0.1"

         type="win32"/>

     <description>description…</description>

     <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">

         <security>

              <requestedPrivileges>

                   <requestedExecutionLevel

                       level="asInvoker"

                       uiAccess="false"

                   />

              </requestedPrivileges>

         </security>

     </trustInfo>

     <dependency>

         <dependentAssembly>

        <assemblyIdentity

                 type="win32"

            name="Microsoft.Windows.Common-Controls"

                 version="6.0.0.0"

            processorArchitecture="x86"

                 publicKeyToken="6595b64144ccf1df"

            language="*"

             />

         </dependentAssembly>

     </dependency>

</assembly>

 

参考文章

http://blog.csdn.net/gulongwan/archive/2009/03/01/3947190.aspx