Sizing edit controls in DialogBoxIndirectParam
Author
I'm creating a dialog box from a template using DialogBoxIndirectParam. It mostly
works except that I can't get the size of the edit controls correct. The link below
is a picture of the result. The edit controls are too wide and they look like they
are too tall also. I have read threads that say you don't really need to use dialog
box units, so I'm trying to use pixels as the units. Can someone explain how to
get the edit controls to be the right width and height for 32 characters? The first row
allowed more than 32 characters. The second row shows how the highlighting looks. Does
anyone know how to size the edit controls properly?
http://www.mccourry.net/pic.jpg
WORD *p;
int nchar, k, col1, col2, dy, iy, len, size;
int w, h, bw, bh, max_label_len, max_edit_len;
int avgWidth, avgHeight;
int fontsize;
float pct = 1.2f;
long lstyle;
char str[32];
HDC hdc;
SIZE sz;
HFONT hFontOld, hfont;
char face[16] = "Arial";
phwnd = _phwnd;
strncpy(title, _title, sizeof(title)-1);
n = _n;
ec = _ec;
hInstance = GetModuleHandle(NULL);
exit_status = 0;
max_label_len = -1;
max_edit_len = -1;
hdc = GetDC(phwnd);
fontsize = 10;
hfont = CreateFont(
-fontsize,
0,
0,
0,
100,
TRUE,
0,
0,
ANSI_CHARSET,
OUT_STRING_PRECIS,
CLIP_TT_ALWAYS,
PROOF_QUALITY,
FIXED_PITCH | FF_SWISS,
face
);
hFontOld = (HFONT)SelectObject(hdc, hfont);
strcpy(str, "x");
GetTextExtentPoint32(hdc, str, strlen(str), &sz);
avgWidth = sz.cx;
avgHeight = sz.cy;
DeleteObject(hfont);
hfont = NULL;
SelectObject(hdc, hFontOld);
dy = ROUND(pct*avgHeight);
for(k=0;k<n;k++) {
len = strlen(ec[k].label);
max_label_len = MAX(max_label_len, len);
len = strlen(ec[k].str);
max_edit_len = MAX(max_edit_len, len);
}
size = 78 + n*42;
size *= 4;
int ii = sizeof(ec[0].str);
col1 = 10;
col2 = col1 + max_label_len*avgWidth + 5;
w = col1 + avgWidth*max_label_len + 5 + avgWidth*ii + col1;
h = ROUND(n*pct*avgHeight + 50);
pdlgtemplate = p = (PWORD) LocalAlloc (LPTR, size);
lstyle = WS_CAPTION | WS_SYSMENU | DS_SETFONT |
WS_VISIBLE | DS_MODALFRAME | WS_POPUP ;
*p++ = LOWORD (lstyle);
*p++ = HIWORD (lstyle);
*p++ = 0;
*p++ = 0;
*p++ = 2 + n*2;
*p++ = 0;
*p++ = 0;
*p++ = w;
*p++ = h;
*p++ = 0;
*p++ = 0;
nchar = nCopyAnsiToWideChar(p, TEXT(title));
p += nchar;
*p++ = fontsize;
nchar = nCopyAnsiToWideChar (p, TEXT("Arial"));
p += nchar;
p = lpwAlign (p);
iy = -dy + 10;
//----------------
//
//----------------
for(k=0;k<n;k++) {
//------------
// the label
//------------
iy += dy;
GetTextExtentPoint32(hdc, ec[k].label, strlen(ec[k].label), &sz);
lstyle = WS_VISIBLE | WS_CHILD;
*p++ = LOWORD (lstyle);
*p++ = HIWORD (lstyle);
*p++ = 0;
*p++ = 0;
*p++ = col1;
*p++ = iy;
*p++ = (WORD)sz.cx;
*p++ = (WORD)sz.cy;
*p++ = 0;
nchar = nCopyAnsiToWideChar (p, TEXT("STATIC"));
p += nchar;
nchar = nCopyAnsiToWideChar (p, TEXT(ec[k].label));
p += nchar;
*p++ = 0;
p = lpwAlign (p);
//-----------------------------------------
// edit control
//-----------------------------------------
int ew = avgWidth*sizeof(ec[0].str);
int eh = avgHeight;
lstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP;
*p++ = LOWORD (lstyle);
*p++ = HIWORD (lstyle);
*p++ = 0;
*p++ = 0;
*p++ = col2;
*p++ = iy;
*p++ = ew;
*p++ = eh;
*p++ = 99+k;
nchar = nCopyAnsiToWideChar (p, TEXT("EDIT"));
p += nchar;
nchar = nCopyAnsiToWideChar (p, TEXT(""));
p += nchar;
*p++ = 0;
p = lpwAlign (p);
} // for(k....
p = lpwAlign (p);
iy += 2*dy;
//-----------------------------------------
// ok button
//-----------------------------------------
bw = 30;
bh = 15;
col1 = ROUND(.28f*w - .5*bw);
col2 = ROUND(.71f*w - .5*bw);
lstyle = BS_PUSHBUTTON | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
*p++ = LOWORD (lstyle);
*p++ = HIWORD (lstyle);
*p++ = 0;
*p++ = 0;
*p++ = col1;
*p++ = iy;
*p++ = bw;
*p++ = bh;
*p++ = IDOK;
nchar = nCopyAnsiToWideChar (p, TEXT("BUTTON"));
p += nchar;
nchar = nCopyAnsiToWideChar (p, TEXT("OK"));
p += nchar;
*p++ = 0;
p = lpwAlign (p);
//-----------------------------------------
// cancel button
//-----------------------------------------
lstyle = BS_PUSHBUTTON | WS_VISIBLE | WS_CHILD | WS_TABSTOP;
*p++ = LOWORD (lstyle);
*p++ = HIWORD (lstyle);
*p++ = 0;
*p++ = 0;
*p++ = col2;
*p++ = iy;
*p++ = bw;
*p++ = bh;
*p++ = IDCANCEL;
nchar = nCopyAnsiToWideChar (p, TEXT("BUTTON"));
p += nchar;
nchar = nCopyAnsiToWideChar (p, TEXT("Cancel"));
p += nchar;
*p++ = 0;
exit_status = DialogBoxIndirectParam(hInstance, (LPDLGTEMPLATE) pdlgtemplate, phwnd, (DLGPROC) dlg, (LPARAM)this);
LocalFree (LocalHandle (pdlgtemplate));
This topic is closed to new replies.
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