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marler8997/example.c

Last active March 31, 2025 19:34
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example.c
static LRESULT CALLBACK LoggingWndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
MsgNode msg_node;
WndProcEnter(&msg_node, hwnd, msg, wparam, lparam);
if (false) {
char buf[1000];
FormatMessages(buf, 0, sizeof(buf), &msg_node);
TRACELOG(LOG_INFO, "WndProc: %s", buf);
}
LRESULT result = ActualWndProc(hwnd, msg, wparam, lparam);
WndProcExit(&msg_node);
return result;
}
Raw
wndprocdebug.h
static const char *get_window_msg_name(uint32_t msg)
{
switch (msg) {
case 0: return "WM_NULL";
case 1: return "WM_CREATE";
case 2: return "WM_DESTROY";
case 3: return "WM_MOVE";
case 5: return "WM_SIZE";
case 6: return "WM_ACTIVATE";
case 7: return "WM_SETFOCUS";
case 8: return "WM_KILLFOCUS";
case 10: return "WM_ENABLE";
case 11: return "WM_SETREDRAW";
case 12: return "WM_SETTEXT";
case 13: return "WM_GETTEXT";
case 14: return "WM_GETTEXTLENGTH";
case 15: return "WM_PAINT";
case 16: return "WM_CLOSE";
case 17: return "WM_QUERYENDSESSION";
case 18: return "WM_QUIT";
case 19: return "WM_QUERYOPEN";
case 20: return "WM_ERASEBKGND";
case 21: return "WM_SYSCOLORCHANGE";
case 22: return "WM_ENDSESSION";
case 24: return "WM_SHOWWINDOW";
case 25: return "WM_CTLCOLOR";
case 26: return "WM_WININICHANGE";
case 27: return "WM_DEVMODECHANGE";
case 28: return "WM_ACTIVATEAPP";
case 29: return "WM_FONTCHANGE";
case 30: return "WM_TIMECHANGE";
case 31: return "WM_CANCELMODE";
case 32: return "WM_SETCURSOR";
case 33: return "WM_MOUSEACTIVATE";
case 34: return "WM_CHILDACTIVATE";
case 35: return "WM_QUEUESYNC";
case 36: return "WM_GETMINMAXINFO";
case 38: return "WM_PAINTICON";
case 39: return "WM_ICONERASEBKGND";
case 40: return "WM_NEXTDLGCTL";
case 42: return "WM_SPOOLERSTATUS";
case 43: return "WM_DRAWITEM";
case 44: return "WM_MEASUREITEM";
case 45: return "WM_DELETEITEM";
case 46: return "WM_VKEYTOITEM";
case 47: return "WM_CHARTOITEM";
case 48: return "WM_SETFONT";
case 49: return "WM_GETFONT";
case 50: return "WM_SETHOTKEY";
case 51: return "WM_GETHOTKEY";
case 55: return "WM_QUERYDRAGICON";
case 57: return "WM_COMPAREITEM";
case 61: return "WM_GETOBJECT";
case 65: return "WM_COMPACTING";
case 68: return "WM_COMMNOTIFY";
case 70: return "WM_WINDOWPOSCHANGING";
case 71: return "WM_WINDOWPOSCHANGED";
case 72: return "WM_POWER";
case 73: return "WM_COPYGLOBALDATA";
case 74: return "WM_COPYDATA";
case 75: return "WM_CANCELJOURNAL";
case 78: return "WM_NOTIFY";
case 80: return "WM_INPUTLANGCHANGEREQUEST";
case 81: return "WM_INPUTLANGCHANGE";
case 82: return "WM_TCARD";
case 83: return "WM_HELP";
case 84: return "WM_USERCHANGED";
case 85: return "WM_NOTIFYFORMAT";
case 123: return "WM_CONTEXTMENU";
case 124: return "WM_STYLECHANGING";
case 125: return "WM_STYLECHANGED";
case 126: return "WM_DISPLAYCHANGE";
case 127: return "WM_GETICON";
case 128: return "WM_SETICON";
case 129: return "WM_NCCREATE";
case 130: return "WM_NCDESTROY";
case 131: return "WM_NCCALCSIZE";
case 132: return "WM_NCHITTEST";
case 133: return "WM_NCPAINT";
case 134: return "WM_NCACTIVATE";
case 135: return "WM_GETDLGCODE";
case 136: return "WM_SYNCPAINT";
case 160: return "WM_NCMOUSEMOVE";
case 161: return "WM_NCLBUTTONDOWN";
case 162: return "WM_NCLBUTTONUP";
case 163: return "WM_NCLBUTTONDBLCLK";
case 164: return "WM_NCRBUTTONDOWN";
case 165: return "WM_NCRBUTTONUP";
case 166: return "WM_NCRBUTTONDBLCLK";
case 167: return "WM_NCMBUTTONDOWN";
case 168: return "WM_NCMBUTTONUP";
case 169: return "WM_NCMBUTTONDBLCLK";
case 171: return "WM_NCXBUTTONDOWN";
case 172: return "WM_NCXBUTTONUP";
case 173: return "WM_NCXBUTTONDBLCLK";
case 255: return "WM_INPUT";
case 256: return "WM_KEYDOWN";
case 257: return "WM_KEYUP";
case 258: return "WM_CHAR";
case 259: return "WM_DEADCHAR";
case 260: return "WM_SYSKEYDOWN";
case 261: return "WM_SYSKEYUP";
case 262: return "WM_SYSCHAR";
case 263: return "WM_SYSDEADCHAR";
case 265: return "WM_UNICHAR";
case 266: return "WM_CONVERTREQUEST";
case 267: return "WM_CONVERTRESULT";
case 268: return "WM_INTERIM";
case 269: return "WM_IME_STARTCOMPOSITION";
case 270: return "WM_IME_ENDCOMPOSITION";
case 271: return "WM_IME_COMPOSITION";
case 272: return "WM_INITDIALOG";
case 273: return "WM_COMMAND";
case 274: return "WM_SYSCOMMAND";
case 275: return "WM_TIMER";
case 276: return "WM_HSCROLL";
case 277: return "WM_VSCROLL";
case 278: return "WM_INITMENU";
case 279: return "WM_INITMENUPOPUP";
case 280: return "WM_SYSTIMER";
case 287: return "WM_MENUSELECT";
case 288: return "WM_MENUCHAR";
case 289: return "WM_ENTERIDLE";
case 290: return "WM_MENURBUTTONUP";
case 291: return "WM_MENUDRAG";
case 292: return "WM_MENUGETOBJECT";
case 293: return "WM_UNINITMENUPOPUP";
case 294: return "WM_MENUCOMMAND";
case 295: return "WM_CHANGEUISTATE";
case 296: return "WM_UPDATEUISTATE";
case 297: return "WM_QUERYUISTATE";
case 305: return "WM_LBTRACKPOINT";
case 306: return "WM_CTLCOLORMSGBOX";
case 307: return "WM_CTLCOLOREDIT";
case 308: return "WM_CTLCOLORLISTBOX";
case 309: return "WM_CTLCOLORBTN";
case 310: return "WM_CTLCOLORDLG";
case 311: return "WM_CTLCOLORSCROLLBAR";
case 312: return "WM_CTLCOLORSTATIC";
case 512: return "WM_MOUSEMOVE";
case 513: return "WM_LBUTTONDOWN";
case 514: return "WM_LBUTTONUP";
case 515: return "WM_LBUTTONDBLCLK";
case 516: return "WM_RBUTTONDOWN";
case 517: return "WM_RBUTTONUP";
case 518: return "WM_RBUTTONDBLCLK";
case 519: return "WM_MBUTTONDOWN";
case 520: return "WM_MBUTTONUP";
case 521: return "WM_MBUTTONDBLCLK";
case 522: return "WM_MOUSEWHEEL";
case 523: return "WM_XBUTTONDOWN";
case 524: return "WM_XBUTTONUP";
case 525: return "WM_XBUTTONDBLCLK";
case 526: return "WM_MOUSEHWHEEL";
case 528: return "WM_PARENTNOTIFY";
case 529: return "WM_ENTERMENULOOP";
case 530: return "WM_EXITMENULOOP";
case 531: return "WM_NEXTMENU";
case 532: return "WM_SIZING";
case 533: return "WM_CAPTURECHANGED";
case 534: return "WM_MOVING";
case 536: return "WM_POWERBROADCAST";
case 537: return "WM_DEVICECHANGE";
case 544: return "WM_MDICREATE";
case 545: return "WM_MDIDESTROY";
case 546: return "WM_MDIACTIVATE";
case 547: return "WM_MDIRESTORE";
case 548: return "WM_MDINEXT";
case 549: return "WM_MDIMAXIMIZE";
case 550: return "WM_MDITILE";
case 551: return "WM_MDICASCADE";
case 552: return "WM_MDIICONARRANGE";
case 553: return "WM_MDIGETACTIVE";
case 560: return "WM_MDISETMENU";
case 561: return "WM_ENTERSIZEMOVE";
case 562: return "WM_EXITSIZEMOVE";
case 563: return "WM_DROPFILES";
case 564: return "WM_MDIREFRESHMENU";
case 640: return "WM_IME_REPORT";
case 641: return "WM_IME_SETCONTEXT";
case 642: return "WM_IME_NOTIFY";
case 643: return "WM_IME_CONTROL";
case 644: return "WM_IME_COMPOSITIONFULL";
case 645: return "WM_IME_SELECT";
case 646: return "WM_IME_CHAR";
case 648: return "WM_IME_REQUEST";
case 656: return "WM_IME_KEYDOWN";
case 657: return "WM_IME_KEYUP";
case 672: return "WM_NCMOUSEHOVER";
case 673: return "WM_MOUSEHOVER";
case 674: return "WM_NCMOUSELEAVE";
case 675: return "WM_MOUSELEAVE";
case 768: return "WM_CUT";
case 769: return "WM_COPY";
case 770: return "WM_PASTE";
case 771: return "WM_CLEAR";
case 772: return "WM_UNDO";
case 773: return "WM_RENDERFORMAT";
case 774: return "WM_RENDERALLFORMATS";
case 775: return "WM_DESTROYCLIPBOARD";
case 776: return "WM_DRAWCLIPBOARD";
case 777: return "WM_PAINTCLIPBOARD";
case 778: return "WM_VSCROLLCLIPBOARD";
case 779: return "WM_SIZECLIPBOARD";
case 780: return "WM_ASKCBFORMATNAME";
case 781: return "WM_CHANGECBCHAIN";
case 782: return "WM_HSCROLLCLIPBOARD";
case 783: return "WM_QUERYNEWPALETTE";
case 784: return "WM_PALETTEISCHANGING";
case 785: return "WM_PALETTECHANGED";
case 786: return "WM_HOTKEY";
case 791: return "WM_PRINT";
case 792: return "WM_PRINTCLIENT";
case 793: return "WM_APPCOMMAND";
case 799: return "WM_DWMNCRENDERINGCHANGED";
case 856: return "WM_HANDHELDFIRST";
case 863: return "WM_HANDHELDLAST";
case 864: return "WM_AFXFIRST";
case 895: return "WM_AFXLAST";
case 896: return "WM_PENWINFIRST";
case 897: return "WM_RCRESULT";
case 898: return "WM_HOOKRCRESULT";
case 899: return "WM_GLOBALRCCHANGE";
case 900: return "WM_SKB";
case 901: return "WM_PENCTL";
case 902: return "WM_PENMISC";
case 903: return "WM_CTLINIT";
case 904: return "WM_PENEVENT";
case 911: return "WM_PENWINLAST";
case 1024: return "WM_USER+0";
case 1025: return "WM_USER+1";
case 1026: return "WM_USER+2";
case 1027: return "WM_USER+3";
case 1028: return "WM_USER+4";
case 1029: return "WM_USER+5";
case 1030: return "WM_USER+6";
default: return "?";
}
}
typedef struct MsgNode {
struct MsgNode *parent;
UINT msg;
WPARAM wparam;
LPARAM lparam;
} MsgNode;
static MsgNode* global_current_msg_node = NULL;
static void WndProcEnter(MsgNode* node, HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
*node = (MsgNode){ global_current_msg_node, msg, wparam, lparam };
global_current_msg_node = node;
}
static void WndProcExit(MsgNode* node)
{
if (global_current_msg_node != node) abort();
global_current_msg_node = node->parent;
}
static size_t FormatMessages(char* buf, size_t offset, size_t buf_len, const MsgNode* node)
{
if (node->parent) {
offset += FormatMessages(buf, offset, buf_len, node->parent);
offset += snprintf(buf + offset, buf_len - offset, " > ");
}
return offset + snprintf(
buf + offset,
buf_len - offset,
"%s(%d,0x%llx)",
get_window_msg_name(node->msg),
node->msg,
node->wparam
);
}
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