ppsspp/Windows/W32Util/UAHMenuBar.h

75 lines
2.3 KiB
C

#pragma once
// MIT license, see LICENSE
// Copyright(c) 2021 adzm / Adam D. Walling
// processes messages related to UAH / custom menubar drawing.
// return true if handled, false to continue with normal processing in your wndproc
bool UAHDarkModeWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, LRESULT* lr);
// window messages related to menu bar drawing
#define WM_UAHDESTROYWINDOW 0x0090 // handled by DefWindowProc
#define WM_UAHDRAWMENU 0x0091 // lParam is UAHMENU
#define WM_UAHDRAWMENUITEM 0x0092 // lParam is UAHDRAWMENUITEM
#define WM_UAHINITMENU 0x0093 // handled by DefWindowProc
#define WM_UAHMEASUREMENUITEM 0x0094 // lParam is UAHMEASUREMENUITEM
#define WM_UAHNCPAINTMENUPOPUP 0x0095 // handled by DefWindowProc
// describes the sizes of the menu bar or menu item
typedef union tagUAHMENUITEMMETRICS
{
// cx appears to be 14 / 0xE less than rcItem's width!
// cy 0x14 seems stable, i wonder if it is 4 less than rcItem's height which is always 24 atm
struct {
DWORD cx;
DWORD cy;
} rgsizeBar[2];
struct {
DWORD cx;
DWORD cy;
} rgsizePopup[4];
} UAHMENUITEMMETRICS;
// not really used in our case but part of the other structures
typedef struct tagUAHMENUPOPUPMETRICS
{
DWORD rgcx[4];
DWORD fUpdateMaxWidths : 2; // from kernel symbols, padded to full dword
} UAHMENUPOPUPMETRICS;
// hmenu is the main window menu; hdc is the context to draw in
typedef struct tagUAHMENU
{
HMENU hmenu;
HDC hdc;
DWORD dwFlags; // no idea what these mean, in my testing it's either 0x00000a00 or sometimes 0x00000a10
} UAHMENU;
// menu items are always referred to by iPosition here
typedef struct tagUAHMENUITEM
{
int iPosition; // 0-based position of menu item in menubar
UAHMENUITEMMETRICS umim;
UAHMENUPOPUPMETRICS umpm;
} UAHMENUITEM;
// the DRAWITEMSTRUCT contains the states of the menu items, as well as
// the position index of the item in the menu, which is duplicated in
// the UAHMENUITEM's iPosition as well
typedef struct UAHDRAWMENUITEM
{
DRAWITEMSTRUCT dis; // itemID looks uninitialized
UAHMENU um;
UAHMENUITEM umi;
} UAHDRAWMENUITEM;
// the MEASUREITEMSTRUCT is intended to be filled with the size of the item
// height appears to be ignored, but width can be modified
typedef struct tagUAHMEASUREMENUITEM
{
MEASUREITEMSTRUCT mis;
UAHMENU um;
UAHMENUITEM umi;
} UAHMEASUREMENUITEM;