Ben,
Would help (a lot) if you posted examples that were complete enough to
actually compile.
Anyway, hacked at your code fragment: see below.
This appears to work fine, so I don't know what is wrong with your code.
Have you asked gdb what it thinks is wrong?
I was getting segfaults from my (initial) attempt to make your code
buildable, so there may be something there...
//
// fltk2-config --compile test.cxx
//
#include <cstdlib>
#include <climits>
#include <cstdio>
#include <cctype>
#include <fltk/run.h>
#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/Button.h>
#include <fltk/Input.h>
#include <fltk/Browser.h>
#include <fltk/TextDisplay.h>
#include <fltk/ask.h>
using namespace fltk;
#define TARGET_LENGTH 9
#define NUM_COLS 3
#define NUM_ROWS 3
#define MIN_LENGTH 4
// input grid is the nine letter grid
class inputGrid {
Input* inbox[TARGET_LENGTH];
void inputCallBack(Input* w);
static void inputCallBack(Widget* w, void* v){
((inputGrid*)v)->inputCallBack((Input*)w); }
public:
inputGrid(int x, int y, int width, int height, const char* label =
0);
bool isLegal();
void setTarget();
};
class TargetWindow : public Window {
inputGrid* inbox;
Button* go;
TextDisplay *outputDisplay;
void buttonCallBack();
static void buttonCallBack(Widget*, void* v){
((TargetWindow*)v)->buttonCallBack();
}
inline void windowCallBack(TargetWindow* v) const {
v->hide();
}
static void windowCallBack(Widget*, void* v) {
((TargetWindow*)v)->windowCallBack((TargetWindow*)v);
}
public:
// constructor
TargetWindow(const char* label) :
Window(USEDEFAULT, USEDEFAULT, 720, 300, label, true)
{
begin();
// inbox is the grid of letters
inbox = new inputGrid(330, 20, 90, 90);
go = new Button(470, 50, 150, 25, "Generate words!");
outputDisplay = new TextDisplay(150, 130, 470, 120, "Valid
words:");
go->callback((Callback*)buttonCallBack, this);
callback(windowCallBack, this);
end();
}
};
// basic cropping of the input boxes and alphabetical sanity checking
void inputGrid::inputCallBack(Input* w) {
char current;
if (w->size() > 1) {
w->cut(w->size() - 1, w->size());
}
if (w->size() > 0) {
current = w->value()[w->size() - 1];
if (!(isalpha(current))) {
w->cut(w->size() - 1, w->size());
}
}
}
// create the input grid
inputGrid::inputGrid (int x, int y, int width, int height, const char*
label) {
int idx;
for (idx = 0; idx < TARGET_LENGTH; idx++) {
if (idx < NUM_COLS) {// first row
inbox[idx] = new Input ((x + ((idx % NUM_COLS) * (width /
NUM_COLS))), y, (width / NUM_COLS), (height / NUM_ROWS));
} else if (idx < (2 * NUM_COLS)) { // second row
if (idx == NUM_COLS) { // first col in second row
inbox[idx] = new Input ((x + ((idx % NUM_COLS) * (width /
NUM_COLS))), (y + (height / NUM_ROWS)), (width / NUM_COLS), (height /
NUM_ROWS), "Input your Target Word here:");
} else {
inbox[idx] = new Input((x + ((idx % NUM_COLS) * (width /
NUM_COLS))), (y + (height / NUM_ROWS)), (width / NUM_COLS), (height /
NUM_ROWS));
}
} else { //third row
inbox[idx] = new Input((x + ((idx % NUM_COLS) * (width /
NUM_COLS))), y + (2 * (height / NUM_ROWS)), (width / NUM_COLS), (height
/ NUM_ROWS));
}
inbox[idx]->callback(inputCallBack, this);
inbox[idx]->when(WHEN_CHANGED);
inbox[idx]->color(BLACK); // cell colours are black
inbox[idx]->textcolor(WHITE); // cell text colours are white
}
inbox[MIN_LENGTH]->color(RED); /* middle grid cell colour is red */
}
// go button callback
void TargetWindow::buttonCallBack(){
int idx;
static int sval = 1;
this->outputDisplay->buffer()->remove(0, INT_MAX);
for (idx = 0; idx < 123; idx++){
char text[15];
sprintf(text, "V %d\n", sval++);
this->outputDisplay->append(text);
}
}
int main(int argc, char **argv) {
TargetWindow win("Browser Example");
win.end();
win.show(argc,argv);
fltk::run();
return 0;
}
/* end of file */
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