71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// 30 may 2015
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#include "uipriv_windows.hpp"
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// TODO refine error handling
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// This just defines the implementation of the tab page HWND itself.
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// The actual work of hosting a tab page's control is in child.c.
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
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#define tabMargin 7
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void tabPageMargins(HWND hwnd, intmax_t *left, intmax_t *top, intmax_t *right, intmax_t *bottom)
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{
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uiWindowsSizing *d;
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d = uiWindowsNewSizing(hwnd);
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*left = uiWindowsDlgUnitsToX(tabMargin, d->BaseX);
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*top = uiWindowsDlgUnitsToY(tabMargin, d->BaseY);
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*right = *left;
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*bottom = *top;
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uiWindowsFreeSizing(d);
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}
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// dummy dialog procedure; see below for details
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// let's handle parent messages here to avoid needing to subclass
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// TODO do we need to handle DM_GETDEFID/DM_SETDEFID here too because of the ES_WANTRETURN stuff at http://blogs.msdn.com/b/oldnewthing/archive/2007/08/20/4470527.aspx? what about multiple default buttons (TODO)?
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// TODO we definitely need to do something about edit message handling; it does a fake close of our parent on pressing escape, causing uiWindow to stop responding to maximizes but still respond to events and then die horribly on destruction
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static INT_PTR CALLBACK dlgproc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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LRESULT lResult;
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if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE) {
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SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, (LONG_PTR) lResult);
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return TRUE;
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}
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// unthemed dialogs don't respond to WM_PRINTCLIENT
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// fortunately they don't have any special painting
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if (uMsg == WM_PRINTCLIENT) {
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// don't worry about the return value; hopefully DefWindowProcW() caught it (if not the dialog procedure itself)
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// we COULD paint the dialog background brush ourselves but meh, it works
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SendMessageW(hwnd, WM_ERASEBKGND, wParam, lParam);
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// and pretend we did nothing just so the themed dialog can still paint its content
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// TODO see if w ecan avoid erasing the background in this case in the first place, or if we even need to
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return FALSE;
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}
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if (uMsg == WM_INITDIALOG)
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return TRUE;
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return FALSE;
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}
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HWND newTabPage(void)
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{
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HWND hwnd;
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HRESULT hr;
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// unfortunately this needs to be a proper dialog for EnableThemeDialogTexture() to work; CreateWindowExW() won't suffice
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hwnd = CreateDialogW(hInstance, MAKEINTRESOURCE(rcTabPageDialog),
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utilWindow, dlgproc);
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if (hwnd == NULL)
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logLastError(L"error creating tab page");
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hr = EnableThemeDialogTexture(hwnd, ETDT_ENABLE | ETDT_USETABTEXTURE | ETDT_ENABLETAB);
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if (hr != S_OK)
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logHRESULT(L"error setting tab page background", hr);
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// and start the tab page hidden
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ShowWindow(hwnd, SW_HIDE);
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return hwnd;
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}
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