libui/windows/tabpage.c

66 lines
2.1 KiB
C

// 30 may 2015
#include "uipriv_windows.h"
// This just defines the implementation of the tab page HWND itself.
// The actual work of hosting a tab page's control is in child.c.
// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
#define tabMargin 7
void tabPageMargins(HWND hwnd, intmax_t *left, intmax_t *top, intmax_t *right, intmax_t *bottom)
{
uiWindowsSizing *d;
d = uiWindowsNewSizing(hwnd);
*left = uiWindowsDlgUnitsToX(tabMargin, d->BaseX);
*top = uiWindowsDlgUnitsToY(tabMargin, d->BaseY);
*right = *left;
*bottom = *top;
uiWindowsFreeSizing(d);
}
// dummy dialog procedure; see below for details
// let's handle parent messages here to avoid needing to subclass
static INT_PTR CALLBACK dlgproc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
LRESULT lResult;
if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE) {
SetWindowLongPtrW(hwnd, DWLP_MSGRESULT, (LONG_PTR) lResult);
return TRUE;
}
// unthemed dialogs don't respond to WM_PRINTCLIENT
// fortunately they don't have any special painting
if (uMsg == WM_PRINTCLIENT) {
// don't worry about the return value; hopefully DefWindowProcW() caught it (if not the dialog procedure itself)
// we COULD paint the dialog background brush ourselves but meh, it works
SendMessageW(hwnd, WM_ERASEBKGND, wParam, lParam);
// and pretend we did nothing just so the themed dialog can still paint its content
return FALSE;
}
if (uMsg == WM_INITDIALOG)
return TRUE;
return FALSE;
}
HWND newTabPage(void)
{
HWND hwnd;
HRESULT hr;
// unfortunately this needs to be a proper dialog for EnableThemeDialogTexture() to work; CreateWindowExW() won't suffice
hwnd = CreateDialogW(hInstance, MAKEINTRESOURCE(rcTabPageDialog),
utilWindow, dlgproc);
if (hwnd == NULL)
logLastError("error creating tab page in newTabPage()");
hr = EnableThemeDialogTexture(hwnd, ETDT_ENABLE | ETDT_USETABTEXTURE | ETDT_ENABLETAB);
if (hr != S_OK)
logHRESULT("error setting tab page background in newTabPage()", hr);
// and start the tab page hidden
ShowWindow(hwnd, SW_HIDE);
return hwnd;
}