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A better solution for setting open/save dialog minimum size

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This one actually works on Windows 7 too.  :-)
This commit is contained in:
Leland Lucius 2015-08-25 00:57:27 -05:00
parent 75ee0becd1
commit b1a3d2313b
1 changed files with 13 additions and 19 deletions
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32
lib-src/FileDialog/win/FileDialogPrivate.cpp
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@ -203,33 +203,21 @@ void FileDialog::MSWOnSize(HWND hDlg, LPOPENFILENAME pOfn)
SetHWND(NULL); SetHWND(NULL);
} }
// Capture the minimum dialog size by saving the first non-zero size. // Provide the minimum size of the dialog
// //
// We get called multiple times: // We've captured the full dialog size in MSWOnInitDone() below. This will be returned
// as the minimum size.
// //
// The first, ptMinTrackSize will be {0, 0}. // When the user tries to resize the dialog, for some unknown reason the common dialog control
// // doesn't let the user resize it smaller than it was the last time the dialog was used. This
// The second, ptMinTrackSize will be the absolute minimum to contain all controls. This is // may be a problem in this code and/or may only be a concern under Windows 10. Either way, we
// the POINT we will use to override the subsequent calls. // override the minimum size supplied by the common dialog control with our own size here.
//
// Additional calls are made when the user resizes the dialog and for some unknown reason the
// the common dialog control doesn't let the user resize the dialog smaller than it was the
// last time the dialog was used. This information is kept in:
//
// HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\CIDSizeMRU
//
// So, we override the minimum size supplied by the common dialog control with the captured
// size from the second call.
void FileDialog::MSWOnGetMinMaxInfo(HWND hwnd, LPOPENFILENAME pOfn, LPMINMAXINFO pMmi) void FileDialog::MSWOnGetMinMaxInfo(HWND hwnd, LPOPENFILENAME pOfn, LPMINMAXINFO pMmi)
{ {
if (mMinSize.x > 0 && mMinSize.y > 0) if (mMinSize.x > 0 && mMinSize.y > 0)
{ {
pMmi->ptMinTrackSize = mMinSize; pMmi->ptMinTrackSize = mMinSize;
} }
else
{
mMinSize = pMmi->ptMinTrackSize;
}
} }
UINT_PTR APIENTRY FileDialog::DialogHook(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam) UINT_PTR APIENTRY FileDialog::DialogHook(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
@ -360,6 +348,11 @@ void FileDialog::MSWOnInitDone(HWND hDlg, LPOPENFILENAME pOfn)
// set HWND so that our DoMoveWindow() works correctly // set HWND so that our DoMoveWindow() works correctly
SetHWND(mChildDlg); SetHWND(mChildDlg);
// capture the full initial size of the dialog to use as the minimum size
RECT r;
GetWindowRect(mParentDlg, &r);
mMinSize = {r.right - r.left, r.bottom - r.top};
if (m_centreDir) if (m_centreDir)
{ {
// now we have the real dialog size, remember it // now we have the real dialog size, remember it
@ -686,6 +679,7 @@ FileDialog::FileDialog(wxWindow *parent,
void FileDialog::Init() void FileDialog::Init()
{ {
mRoot = NULL; mRoot = NULL;
mMinSize = {0, 0};
// NB: all style checks are done by wxFileDialogBase::Create // NB: all style checks are done by wxFileDialogBase::Create