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PODialog using runtime-created template doesn't work on XP 32 bit
 

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  1. PODialog using runtime-created template doesn't work on XP 32 bit
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    <p>I have written a runtime-created dialog class that doesn't use any resource files based on this example: <a href="http://blogs.msdn.com/b/oldnewthing/archive/2005/04/29/412577.aspx" rel="nofollow">http://blogs.msdn.com/b/oldnewthing/archive/2005/04/29/412577.aspx</a></p> <p>It is compiled on a Windows 7 x64 machine, but as an x86 application. The dialog is part of a larger program that at other places use normal dialogs with resource files (MFC).</p> <p>The dialog is launched by DialogBoxIndirectParam like this:</p> <pre><code>DialogBoxIndirectParam(NULL, m_template.GetTemplate(), NULL, DlgProc, reinterpret_cast&lt;LPARAM&gt;(this)); </code></pre> <p>The dialog shows fine on all Windows 7 x64 machines I have tried, but it doesn't work on Windows XP x86 machines. I don't know if it's the Windows version or the CPU bit part that is the culprit.</p> <p>Some interesting but strange things:</p> <ul> <li>Dialogs in the same program using normal resources work fine in both Win 7 and Win XP.</li> <li>When comparing the runtime-created dialog template byte by byte I can see no difference from the resource-constructed dialogs.</li> <li>As long as I don't add any controls what so ever to the dialog, it WILL display in XP, but if I add as much as a single static it won't.</li> <li>I have monitored the callback function and when it starts it sends WM_SETFONT, WM_DESTROY, WM_NCDESTROY and then dies. It's like it gives up somewhere between WM_SETFONT and WM_CREATE.</li> </ul> <p>I have found others with similar problems but none exactly like mine: <a href="http://social.msdn.microsoft.com/Forums/zh/vcgeneral/thread/45989a10-2785-486d-94ae-4f1f3e1ca651" rel="nofollow">http://social.msdn.microsoft.com/Forums/zh/vcgeneral/thread/45989a10-2785-486d-94ae-4f1f3e1ca651</a>, <a href="http://cboard.cprogramming.com/windows-programming/39218-createdialog-failure.html" rel="nofollow">http://cboard.cprogramming.com/windows-programming/39218-createdialog-failure.html</a></p> <p>I must say that I'm at my wits end about this, I'm just not good enough at win32 programming to figure out exactly what could be wrong here.</p> <p>Here is what the template code looks like:</p> <pre><code>DialogTemplate::DialogTemplate(const std::wstring&amp; title, WORD width, WORD height) : m_numControls(0) { AddHeader(title, width, height); AddFont(); } DialogTemplate::~DialogTemplate(void) { } void DialogTemplate::AddHeader(const std::wstring&amp; title, WORD width, WORD height) { // Write out the extended dialog template header m_data.Write&lt;WORD&gt;(1); // dialog version m_data.Write&lt;WORD&gt;(0xFFFF); // extended dialog template m_data.Write&lt;DWORD&gt;(0); // help ID m_data.Write&lt;DWORD&gt;(0); // extended style m_data.Write&lt;DWORD&gt;(WS_CAPTION | WS_SYSMENU | DS_SETFONT | DS_MODALFRAME); m_data.Write&lt;WORD&gt;(0); // number of controls (placeholder) m_data.Write&lt;WORD&gt;(32); // X m_data.Write&lt;WORD&gt;(32); // Y m_data.Write&lt;WORD&gt;(width); // width m_data.Write&lt;WORD&gt;(height); // height m_data.WriteString(L""); // no menu m_data.WriteString(L""); // default dialog class m_data.WriteString(title.c_str()); // title } bool DialogTemplate::AddFont() { // Write out font HDC hdc = GetDC(NULL); if (!hdc) return false; NONCLIENTMETRICSW ncm = { sizeof(ncm) }; if (!SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, 0, &amp;ncm, 0)) return false; if (ncm.lfMessageFont.lfHeight &lt; 0) ncm.lfMessageFont.lfHeight = -MulDiv(ncm.lfMessageFont.lfHeight, 72, GetDeviceCaps(hdc, LOGPIXELSY)); m_data.Write&lt;WORD&gt;((WORD)ncm.lfMessageFont.lfHeight); // point m_data.Write&lt;WORD&gt;((WORD)ncm.lfMessageFont.lfWeight); // weight m_data.Write&lt;BYTE&gt;(ncm.lfMessageFont.lfItalic); // Italic m_data.Write&lt;BYTE&gt;(ncm.lfMessageFont.lfCharSet); // CharSet m_data.WriteString(ncm.lfMessageFont.lfFaceName); return true; } void DialogTemplate::AddControl(LPCWSTR pszType, WORD x, WORD y, WORD width, WORD height, const std::wstring&amp; text, DWORD controlId, DWORD style) { m_data.AlignToDword(); m_data.Write&lt;DWORD&gt;(0); // help id m_data.Write&lt;DWORD&gt;(0); // window extended style m_data.Write&lt;DWORD&gt;(WS_CHILD | style); // style m_data.Write&lt;WORD&gt;(x); // x m_data.Write&lt;WORD&gt;(y); // y m_data.Write&lt;WORD&gt;(width); // width m_data.Write&lt;WORD&gt;(height); // height m_data.Write&lt;DWORD&gt;(controlId); // control ID m_data.WriteString(pszType); // control type (as string) m_data.WriteString(text.c_str()); // text m_data.Write&lt;WORD&gt;(0); // no extra data ++m_numControls; m_data.Overwrite&lt;WORD&gt;(m_numControls, NUM_CTRL_OFFS); } void DialogTemplate::AddControl(DWORD dwType, WORD x, WORD y, WORD width, WORD height, const std::wstring&amp; text, DWORD controlId, DWORD style) { m_data.AlignToDword(); m_data.Write&lt;DWORD&gt;(0); // help id m_data.Write&lt;DWORD&gt;(0); // window extended style m_data.Write&lt;DWORD&gt;(WS_CHILD | style); // style m_data.Write&lt;WORD&gt;(x); // x m_data.Write&lt;WORD&gt;(y); // y m_data.Write&lt;WORD&gt;(width); // width m_data.Write&lt;WORD&gt;(height); // height m_data.Write&lt;DWORD&gt;(controlId); // control ID m_data.Write&lt;DWORD&gt;(dwType); // control type (as DWORD) m_data.WriteString(text.c_str()); // text m_data.Write&lt;WORD&gt;(0); // no extra data ++m_numControls; m_data.Overwrite&lt;WORD&gt;(m_numControls, NUM_CTRL_OFFS); } </code></pre> <p>Wow, it's super annoying to paste code here if it's indented by tabs :-/</p>
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    1. USDaedalusAlpha
    1. USDaedalusAlpha
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    1. COIt has to be a problem with your template, but you give no information about it except that it can be a static only dialog.
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      1. PODialog using runtime-created template doesn't work on XP 32 bit
      1. USRoman R.
    2. COI added the template creation code.
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      1. USDaedalusAlpha
 

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