Mfc bug: MDI + chtmlview + splitter + Windows 7 aero peek = error?

Document directory

• Reproduction steps
• Error cause
• Solution

Reproduction steps

1. Use vs2010 to create an MFC application project.
2. In the generate wizard, make the following settings:
3. Application Type page: Select multiple documents (default)
4. User Interface page: hook the split window
5. Generated classes page: Select chtmlview for the base class of the view.
6. Generate wizard
7. Compile the debug version to generate the MFC Application
8. Start the program and use the menu file/New to generate more than two document windows.
9. In Windows 7, use the aero peek function of the taskbar to preview the document window of the program.
10. Program error

Error cause 1. Void cscrollview: onpreparedc (CDC * PDC, cprintinfo * pinfo) <br/>{< br/> //... <br/> # ifdef _ debug <br/> If (m_nmapmode = mm_none) <br/>{< br/> trace (traceappmsg, 0, "error: must Call setscrollsizes () or setscaletofitsize () "); <br/> trace (traceappmsg, 0,"/tbefore painting scroll view. /n "); <br/> assert (false); <br/> return; <br/>}< br/> # endif // _ debug <br/> // <br/>}2. Void chtmlview: ondraw (CDC */* PDC */) <br/> {<br/> // This class shocould never do its own drawing; <br/> // the browser control shocould handle everything </P> <p> assert (false); <br/>}< br/>Solution 1. Call setscrollsizes in the oninitialupdate Method Void cxxview: oninitialupdate () <br/>{< br/> chtmlview: oninitialupdate (); <br/> setscrollsizes (mm_text, csize (0, 0 )); <br/> navigate2 (_ T ("http://www.msdn.microsoft.com/visualc/"), null, null); <br/>}< br/>2. Override the ondraw method of chtmlview Void cxxview: ondraw (CDC */* PDC */) <br/>{</P> <p >}< br/>