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- //----------------------------------------------------------------------------
- // ObjectWindows - (C) Copyright 1991,1993 by Borland International
- //
- // This program demonstrates the use of TFloatingFrame. It uses
- // a class derived from TComboBox that catches the <RETURN> key in an
- // edit field and executes the command which was typed. If the command
- // executed sucessfully it is stored in the combo box's list box for
- // future retrieval.
- //
- // Commands supported:
- // DOS Executes command.com
- // DIR Launches WINFILE
- // CD x$ Changes default directory (CD\ CD \)
- // EXIT Closes OWLCMD
- // x$: Changes default drive (D:)
- // x$ Executes command x$
- //
- //----------------------------------------------------------------------------
- #include <owl\owlpch.h>
- #include <owl\applicat.h>
- #include <owl\edit.h>
- #include <owl\combobox.h>
- #include <owl\floatfra.h>
- #include "string.h"
- #include "dir.h"
-
- const int EDITWIDTH = 300; // Width of the combo box
- const int CMDBUFSIZE = 256; // Max command size
- const int COMBO_ID = 1;
-
- // For diagnostics
- DIAG_DEFINE_GROUP(OwlCmd,1,0);
-
- //
- // A Combo box is actually made up of three windows, an edit
- // window, a list box window, and a parent window. If we need to trap
- // an event on the edit or list box window, normal OWL event handlers
- // won't work. These event handlers would trap events to the parent
- // window.
- //
- // TComboEdit is hard wired to the control ID that MS uses for the edit
- // window. This allows us to trap events, like CR.
- //
-
- const int COMBO_LIST_ID = 0x3e8; // Window ID for list box component
- const int COMBO_EDIT_ID = 0x3e9; // Window ID for edit field component
-
- class TComboEdit : public TEdit {
- public:
- TComboEdit(TComboBox* parent, UINT textLen) :
- TEdit(parent, COMBO_EDIT_ID, textLen)
- {
- Combo = parent;
- }
-
- private:
- // This is where we'll look for c/r and special keys
- void EvChar(UINT key, UINT repeatCount, UINT flags);
-
- void ExecuteCmd(char *cmd);
-
- // We could also get Parent from TWindow and downcast it
- TComboBox* Combo;
-
- char EditBuf[CMDBUFSIZE];
- char CmdBuf[CMDBUFSIZE];
-
- DECLARE_RESPONSE_TABLE(TComboEdit);
- };
-
- DEFINE_RESPONSE_TABLE1(TComboEdit,TEdit)
- EV_WM_CHAR,
- END_RESPONSE_TABLE;
-
- //
- // This is where we look for the <ENTER> key and execute commands
- //
- void
- TComboEdit::EvChar(UINT key, UINT /*repeatCount*/, UINT /*flags*/)
- {
- char* ptr;
- int result;
- TWindow* fw;
-
- if (key == VK_RETURN) {
- //
- // Get Line into local buffer for parsing
- //
- GetText(EditBuf, sizeof(EditBuf));
- if (!EditBuf[0]) // Ignore empty strings
- return;
-
- strupr(EditBuf);
- ptr = EditBuf;
-
- //
- // Brain dead parser
- //
- if (strcmp(EditBuf, "DIR") == 0) {
- wsprintf(CmdBuf,"winfile");
- ExecuteCmd(CmdBuf);
- return;
-
- } else if (strcmp(EditBuf,"DOS") == 0) {
- wsprintf(CmdBuf,"COMMAND.COM");
- ExecuteCmd(CmdBuf);
- return;
-
- } else if (strcmp(EditBuf,"EXIT") == 0) {
- //Quit
- PostQuitMessage(0);
- return;
-
- } else if (strncmp(EditBuf,"CD",2) == 0 && strlen(EditBuf) > 2 ) {
- if (EditBuf[2] == '\\')
- result = chdir(EditBuf+2);
- else if (EditBuf[2] == ' ') {
- for (char* p = EditBuf+3; *p && *p == ' '; p++);
- result = chdir(p); // Point past space
- } else {
- // Must be a program name starting with "cd"
- ExecuteCmd(EditBuf);
- return;
- }
- if (result) {
- ptr = "Invalid directory";
- MessageBox(ptr,"OWLCMD",MB_OK);
- return;
- } else {
- ExecuteCmd(0); //Just store result and clear edit field
- ptr = getcwd(EditBuf,sizeof(EditBuf));
- if (ptr) {
- fw = GetApplication()->GetMainWindow();
- fw->SetCaption(ptr);
- fw->SetWindowPos(0, TRect(), SWP_DRAWFRAME|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER);
-
- }
- return;
- }
-
- } else if (isalpha(EditBuf[0]) &&
- EditBuf[1] == ':' &&
- EditBuf[2] == 0) {
- //
- // Set drive
- //
- setdisk(toupper(EditBuf[0])-'A');
- ptr = getcwd(EditBuf,sizeof(EditBuf));
- if (ptr){
- ExecuteCmd(0); // Store and clear
- fw = GetApplication()->GetMainWindow();
- fw->SetCaption(ptr);
- fw->SetWindowPos(0, TRect(), SWP_DRAWFRAME|SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER);
- }
-
- } else {
- ExecuteCmd(EditBuf);
- return;
- }
- } else
- DefaultProcessing();
-
- return;
- }
-
- void
- TComboEdit::ExecuteCmd(char* cmd)
- {
- if (cmd) {
- int result = WinExec(cmd, SW_SHOWNORMAL);
- switch (result) {
- case 0: cmd = "Out of memory"; break;
- case 2: cmd = "File not found"; break;
- case 3: cmd = "Path not found"; break;
- default: cmd = "Error in WinExec"; break;
- }
- if (result <= 32 ) {
- MessageBox(cmd, "OWLCMD", MB_OK);
- return;
- }
- }
-
- //
- // If we got here, then command was sucessful
- // Store command in pick list buffer, & clear edit control
- //
- Combo->InsertString(EditBuf,0);
- Clear();
- }
-
- //------------------------------------------------------------------------
-
- class TLineEdit : public TComboBox {
- public:
- TLineEdit(TWindow* p,int w, int h);
-
- TComboEdit* Ed;
- };
-
- TLineEdit::TLineEdit(TWindow* p, int w, int h)
- : TComboBox(p, COMBO_ID, -1, -1, w, h, CBS_DROPDOWN, CMDBUFSIZE-1)
- {
- Ed = new TComboEdit(this, CMDBUFSIZE-1);
-
- // We don't want a sorted list!
- Attr.Style &= ~CBS_SORT;
- }
-
- //------------------------------------------------------------------------
-
- class TMyFrame : public TFloatingFrame {
- public:
- TMyFrame(TWindow* client, char* title);
-
- private:
- void SetupWindow();
-
- TLineEdit* Cmd;
-
- DECLARE_RESPONSE_TABLE(TMyFrame);
- };
-
- DEFINE_RESPONSE_TABLE1(TMyFrame, TFloatingFrame)
- END_RESPONSE_TABLE;
-
- TMyFrame::TMyFrame(TWindow* client, char* title)
- : TFloatingFrame(0, title, client)
- {
- //
- // We can set our own attributes, but must be before EnableTiny...
- //
- Attr.Style = WS_POPUP | WS_BORDER | WS_SYSMENU | WS_MINIMIZEBOX;
-
- //
- // Or we can be specific, even make it BIGGER if we want
- // If we set the option CloseBox flag to true, then clicking the box
- // will close the window instead of displaying the system menu
- //
- EnableTinyCaption(52, FALSE);
-
- //
- // Create our combo box and size it for an edit line and 5 text items
- // What's the correct way to get the height of an edit control?
- //
- int lineH = GetSystemMetrics(SM_CYCAPTION)+2; // 1pixel top & bottom border
- Cmd = new TLineEdit(this, EDITWIDTH, lineH*6);
- Attr.X = (GetSystemMetrics(SM_CXSCREEN) - EDITWIDTH)/2;
- Attr.Y = (GetSystemMetrics(SM_CYSCREEN) - lineH*6)/2;
- Attr.W = EDITWIDTH;
- Attr.H = 0; // Resize ourselves later, when we know the actual size
- }
-
- void
- TMyFrame::SetupWindow()
- {
- TFloatingFrame::SetupWindow();
-
- //
- // Resize window to actual combo box size
- //
- TRect cr = Cmd->GetWindowRect();
- TRect newRect = GetWindowRect();
- MoveWindow(newRect.left, newRect.top,
- newRect.Width(), CaptionHeight + cr.Height(), TRUE);
-
- char buf[MAXDIR+1];
- if (getcwd(buf, sizeof(buf)))
- SetCaption(buf);
- }
-
- //------------------------------------------------------------------------
-
- class TOwlCmd : public TApplication {
- public:
- TOwlCmd() : TApplication("Owl Command") {}
-
- protected:
- void InitMainWindow() {MainWindow = new TMyFrame(0,"OwlCmd");}
- };
-
- int
- OwlMain(int /*argc*/, char* /*argv*/ [])
- {
- return TOwlCmd().Run();
- }
-